for new llsd_clone(), llsd_shallow() functions.

llsd::array(), as one might suspect, takes an arbitrary number of arguments of
arbitrary convertible types and returns an LLSD::Array constructed from those
elements. This supercedes the older LLSDArray class.

llsd::map() takes an even number of arguments paired as (LLSD::String,
arbitrary convertible type) and returns an LLSD::Map constructed from those
(key, value) pairs. This supercedes the older LLSDMap class.

These two functions not only have a simpler API -- arbitrary function
arguments rather than an (arg list)(arg list) sequence -- but also
specifically return a final LLSD object, rather than needing conversion to
LLSD from the LLSDArray or LLSDMap object.

Also support LLSD == LLSD and LLSD != LLSD comparisons, using llsd_equals()
with default exact-float-equality semantics.

We include both const and non-const overloads. The latter returns LLSD&, so
you can assign to the located element.

In fact we already implemented the non-const logic in a less public form as
storeToLLSDPath() in lleventcoro.cpp. Reimplement the latter to use the new
llsd::drill() function.

Update to build on Xcode 6.0: clang warned about comparison of unsigned int to >=0 - correct ifx here is to retype the variable as signed

You can't directly write:
BOOST_FOREACH(LLSD item, someLLSDarray) { ... }
because LLSD has two distinct iteration mechanisms, one for arrays and one for
maps, neither using the standard [const_]iterator typedefs or begin()/end()
methods. But with these helpers, you can write:
BOOST_FOREACH(LLSD item, llsd::inArray(someLLSDarray)) { ... }
or
BOOST_FOREACH(const llsd::MapEntry& pair, llsd::inMap(someLLSDmap)) { ... }
These are in namespace llsd instead of being (e.g.) llsd_inMap because with a
namespace at least your .cpp file can have a local 'using':
using namespace llsd;
BOOST_FOREACH(LLSD item, inArray(someLLSDarray)) { ... }
It's namespace llsd rather than LLSD because LLSD can't be both a namespace
and a class name.

Nested LLSDArray expressions, e.g.:
LLSD array_of_arrays(LLSDArray(LLSDArray(17)(34))
                              (LLSDArray("x")("y")));
would quietly produce bad results because the outermost LLSDArray was being
constructed with the compiler's implicit LLSDArray(const LLSDArray&) rather
than LLSDArray(const LLSD&) as the reader assumes. Fixed with an explicit copy
constructor to Do The Right Thing.
Generalized LLSDParam<float> specialization into a macro to resolve similar
conversion ambiguities for float, LLUUID, LLDate, LLURI and LLSD::Binary.
Added optional bits= argument to llsd_equals() to permit comparing embedded
Real values using is_approx_equal_fraction() rather than strictly bitwise.
Omitting bits= retains current bitwise-comparison behavior.

LLSDArray is a helper to construct an LLSD::Array value inline.
LLSDMap is a helper to construct an LLSD::Map value inline.
LLSDParam is a customization point, a way for generic code to support
unforseen parameter types as conversion targets for LLSD values.

Moves libllcommon.so to a staging dir for unit tests to work
and gets rid of LL_COMMON_API in forward declarations

ignore-dead-branch

Ok, finally got this to a point where it doesn't break the build and I can check
in. llcommon can be built as a shared library (disabled but can be enabled with
cmake cache var LLCOMMON_LINK_SHARED.

reviewed by Mani on tuesday (I still need to get his suggested changes
re-reviewed)

svn merge -r113003:119136 svn+ssh://svn.lindenlab.com/svn/linden/branches/login-api/login-api-2 svn+ssh://svn.lindenlab.com/svn/linden/branches/login-api/login-api-3

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

svn merge -r 90938:92097 svn+ssh://svn.lindenlab.com/svn/linden/branches/qar-730/qar-730-merge -> release.  This is for QAR-730: Combination merge of QAR-432 and QAR-601

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

svn merge -r 84911:86069 svn+ssh://svn.lindenlab.com/svn/linden/branches/Branch_1-21-Server --> release

Backport fixes made in the production branch to the trunk now that it is live on the grid:
* DEV-14443 Launcher not producing colo prefix when looking up sim class
* DEV-10840 "/etc/init.d/backbone stop" returns before all child backbones exited; "backbone restart" results in defunct children
* DEV-12558: Able to make anyone's object shout error messages
* QAR-483 user start location migration prelude
* QAR-490 havok4-6
* Revert havok4-5/4-6 code changes causing parcel access check issues
* Revert QAR-277 sqlite-backbone
* DEV-12357 SEC-53: Script that crashes regions
* QAR-486 New proc and query for Web Classifieds Fix

Includes pullout of migrate-start-location-2, webservice changes made to 1.20, DEV-7229, and other web-ds changes. Reviewed by Josh.

Result of svn merge -r84383:84400 svn+ssh://svn/svn/linden/branches/migrate-start-location-2 intinto release. QAR-458

svn merge -r 75354:76103 svn+ssh://svn.lindenlab.com/svn/linden/branches/voice-group-moderation-3 -> release.  Finished product of QAR-134

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.

result of merge manually performed through diff and patch. svn diff svn+ssh://svn/svn/linden/release@63615 svn+ssh://svn/svn/linden/branches/release-candidate@63637 | patch -p0 in release

Port fix for SL-32157 "PowerPC Mac crashes when crossing regions or teleporting with capabilities turned on" from Branch 1-13-2 r56710 via partial merge of release-candidate -r 56743:56744