This allows the io.cpp test to listen only on the localhost loopback, avoiding
the macOS 10.13.6 "allow listening for incoming connections" popup while
running build-time tests that might halt an unattended TeamCity build.

another attempt to move mem stat into base class

replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

Renaming HTTP_HEADER_* into HTTP_IN_HEADER_* and HTTP_OUT_HEADER_* to make it more clear which header strings should be used for incoming vs outgoing situations.
Using constants for commonly used llhttpnode context strings.

cleaning up build
moved most includes of windows.h to llwin32headers.h to disable min/max macros, etc
streamlined Time class and consolidated functionality in BlockTimer class
llfasttimer is no longer included via llstring.h, so had to add it manually in several places

fix for SH-2823 and SH-2824: LLCurl crash inside LLBufferArray::countAfter() and LLBufferArray::copyIntoBuffers

The final version should be picked up when update.

Reviewed by Kelly

* Reordered HTTP proxy choices in settings dialog
* Now using setBlocking and setNonBlocking LLSocket methods during TCP handshakes.
* Made those LLSocket methods available outside the class.

accessed through the static LLThread::tldata().
Currently this object contains two (public) thread-local
objects: a LLAPRRootPool and a LLVolatileAPRPool.

The first is the general memory pool used by this thread
(and this thread alone), while the second is intended
for short lived memory allocations (needed for APR).
The advantages of not mixing those two is that the latter
is used most frequently, and as a result of it's nature
can be destroyed and reconstructed on a "regular" basis.

This patch adds LLAPRPool (completely replacing the old one),
which is a wrapper around apr_pool_t* and has complete
thread-safity checking.

Whenever an apr call requires memory for some resource,
a memory pool in the form of an LLAPRPool object can
be created with the same life-time as this resource;
assuring clean up of the memory no sooner, but also
not much later than the life-time of the resource
that needs the memory.

Many, many function calls and constructors had the
pool parameter simply removed (it is no longer the
concern of the developer, if you don't write code
that actually does an libapr call then you are no
longer bothered with memory pools at all).

However, I kept the notion of short-lived and
long-lived allocations alive (see my remark in
the jira here: https://jira.secondlife.com/browse/STORM-864?focusedCommentId=235356&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-235356
which requires that the LLAPRFile API needs
to allow the user to specify how long they
think a file will stay open. By choosing
'short_lived' as default for the constructor
that immediately opens a file, the number of
instances where this needs to be specified is
drastically reduced however (obviously, any
automatic LLAPRFile is short lived).

***

Addressed Boroondas remarks in https://codereview.secondlife.com/r/99/
regarding (doxygen) comments. This patch effectively only changes comments.

Includes some 'merge' stuff that ended up in llvocache.cpp
(while starting as a bug fix, now only resulting in a cleanup).

***

Added comment 'The use of apr_pool_t is OK here'.

Added this comment on every line where apr_pool_t
is correctly being used.

This should make it easier to spot (future) errors
where someone started to use apr_pool_t; you can
just grep all sources for 'apr_pool_t' and immediately
see where it's being used while LLAPRPool should
have been used.

Note that merging this patch is very easy:
If there are no other uses of apr_pool_t in the code
(one grep) and it compiles, then it will work.

***

Second Merge (needed to remove 'delete mCreationMutex'
from LLImageDecodeThread::~LLImageDecodeThread).

***

Added back #include <apr_pools.h>.

Apparently that is needed on libapr version 1.2.8.,
the version used by Linden Lab, for calls to
apr_queue_*. This is a bug in libapr (we also
include <apr_queue.h>, that is fixed in (at least) 1.3.7.

Note that 1.2.8 is VERY old. Even 1.3.x is old.

***

License fixes (GPL -> LGPL). And typo in comments.
Addresses merov's comments on the review board.

***

Added Merov's compile fixes for windows.

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

svn merge -r95195:96886 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-24-Server --> release

Merging fixes from 1.24 Server.

From vcr-maint-2:
* QAR-856: viewer crash log analyzer updates.

From direct-slurl-1:
* login.cgi: simplification of the way start-locations are chosen and the new-user browser tutorial is shown.
* No longer fake ever-logged-in flag
* support for dataservice query string encryption

from maint-server-4:
* DEV-19961: llInstantMessages of length N fail.

from landstore-v2-01-merge:
* DEV-12330: Allow Neighbors & Tweaks.
* DEV-14126: Re-order items on Region Detail page.
* DEV-14064: Add "Delete" order buttons in the View Cart area.
* DEV-15026: Indicate in the Event Log whether purchase is a Openspace or regular region.
* DEV-15242: disable checkout button after first click.
* DEV-15285: Region Names in cart or fulfilled should expire after 30 min or when delivered.
* DEV-14018: No currency listed for land prices
* DEV-1688: Tool: Ability to view and clear Allowed Neighbors from a region.
* DEV-17199: Fatal error when adding your login name to your allowed neighbors list.
* DEV-17251: Deleting an unavailable item from the shopping cart causes a fatal error.
* DEV-17291: Fatal error occurs when performing various activities.
* DEV-17177: Typo on Land store 2.01 checkout page.

From 1.24:
* DEV-19865 (SVC-2927): Abandoning land changes land name and description even when done by an Estate Manager.
* DEV-19916 (SVC-2938): bug fix for llGetNextEmail() failure.
* DEV-19936 (SVC-2962): adding a value to a list also modifies the list in place.
* SVC-2750, SVC-2958, SVC-2973: Changed LSL scheduler logic to yield if finished and no state change is pending.
* indra/lib/python/indra/agent/auth.py no longer assumes there is a critical message, and checks credential as specified by OGP rev3.
* DEV-20051: Added defensive checks on script rez path.
* Improvements to scripts/make_deploy_group.py.
* DEV-18897: llScriptReset wasn't resetting events for LSL scripts.
* DEV-20127: Fix for stl misuse in newsim/llsimparcel.cpp.
* DEV-18897: Mono Beta - LSL attach() event survives reset.
* DEV-20212 (VWR-9026): String fix - Attempting to teleport to "Help Island" produces a dialog referencing "Orientation Island"
* DEV-20164: llListen caching indefinitely across states.
* DEV-19950: timer() event triggers before on_rez(), & state_entry()
* DEV-19712 (SVC-2908): C# error messages with Mono Compiled scripts
* Fixes for chat service unit tests.
* DEV-19106: (SVC-1571): Rezzing a coalesced objects with 1024 scripted prims fails.

dataserver-is-deprecated

dataserver-is-deprecated
for-fucks-sake-whats-with-these-commit-markers

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.

svn merge --ignore-ancestry svn+ssh://svn/svn/linden/release@65088 svn+ssh://svn/svn/linden/branches/release-candidate@65078 -> release Paired by Tess and rdw.