instead of legacy BOOL.

Use the same signatures as for the other platforms.

Update to build on Xcode 6.0 (fix unit tests): turn off warnings for multiple unused private members

stat definition as they don't work on gcc/clang

also, removed LLTrace::init and cleanup
removed derived class implementation of memory stat for LLMemTrackable
is automatic now

copied over scene load frame differencing changes from viewer-interesting
made periodicrecording flexible enough to allow for indefinite number of periods
added scene loading stats floater
fixed collapsing behavior of container views

fix for unit test failures...cleanup apr without destroying
pools, allowing LLProxy to clean itself up as a singleton (and
avoiding spurious dependencies associated with manually destorying
singletons that rely on apr pools)

follow up to fix test compiles.

SH-3050 : Parse an input codestream without decompressing it to find discard levels boundaries (test only).

EXP-664 : Make encoding parameters more resilient to bad entries, add levels as encoding parameters, update test applet to support this

STORM-744 : Took code review into account, moving stuff back in protected or even private, fix things to work in debug mode, some clean up in j2coj also