MAINT-1491 Make GPU table more readable, clear out some cruft, and start reporting raw GL strings in viewer stats instead of GPU table labels to make future GPU table overhauls more effective.

MAINT-1491 Add Radeon HD 7xxx chips, get rid of "ATI Technologies" catch all, split up NVIDIA GT(X) 6xx series into mobile/desktop.

MAINT-1491 Integration of statistically generated GPU table -- enable shadows by default where appropriate.

The user's custom dictionary and ignore list are now independent of the primary dictionary.

STORM-276 FIXED Main dictionary combobox in spell check settings floater doesn't sort dictionaries by name

EXP-1953: Altering the behavior of building an LLTextBase such that icons are appended in place rather than prepended out of context.

EXP-1953: Sending an automated IM back to the user who offered the teleport lure informing the inviter that the guest cannot access the region because of their maturity level.

Over the years we've skipped more and more of the tests in
llhttpclient_test.cpp (nee llhttpclient_tut.cpp) because they've relied on
particular behaviors from Internet sites not under our control.
We skipped a test that fetches llsd+xml from secondlife.com because
"secondlife.com is not reliable enough for unit tests."
We skipped a test that tries to observe a failure with "http://www.invalid"
because some local ISPs turn "no such domain" DNS errors into valid pages
offering the requester to buy the specified domain name.
Today we've had to skip tests attempting to contact "http://www.google.com"
for reasons we haven't yet diagnosed, but that probably have to do with
Google's IPv6 rollout.
Use local temp server test_llsdmessage_peer.py as the success destination,
eliminating DNS, Internet access and remote server behavior as failure modes.
Use idle localhost port for failure test.
Re-enable all skipped LLHTTPClient tests!
Re-enable on Windows!
In support of these tests, modify test_llsdmessage_peer.py:
Support HEAD as no-data variant of GET.
Change GET result dict to avoid resembling an error response -- confusing.
Make GET/POST return actual dict rather than undecorated string "success".
Because of that last, change llcapabilitylistener_test.cpp and
llsdmessage_test.cpp to extract "reply" key from response rather than
expecting response to be a string itself.

indra/test/llhttpclient_tut.cpp ==> indra/llmessage/tests/llhttpclient_test.cpp,
with corresponding CMakeLists.txt changes in their respective directories.
This first commit merely moves the test source file without changing it --
separating out moves from edits simplifies code review.

Today, 2012-06-06, LLHTTPClient::get("http://www.google.com/") has stopped
working. This is unrelated to viewer code changes: it crosses repo boundaries.
Skip the afflicted tests to get builds working until we can recast the tests
to avoid the flaky dependency.

The change from LLProcessLauncher to LLProcess introduces the possibility of a
NULL (default-constructed) LLProcessPtr. Add certain static LLProcess methods
accepting LLProcessPtr, forwarding to nonstatic method when non-NULL but doing
something reasonable with NULL. Use these methods in LLPLuginProcessParent.

EXP-1942: BUGFIX Ensuring to clear the flag indicating that maturity changed during teleport when the maturity level change fails.