libs: Update apr to 1.4.5, gmock to 1.6, add havok-source to autobuild for diff consistency with linden
common: Import changes to llqueuedthread
network: Updated bits and pieces of llmessage
common: Patch up private memory pool a bit
misc: random whitespace and rip out some leftover debug spew, minor opts
skin: Remove minimal skin/mode
render: Migrate bits of LLViewerTexture to LLGLTexture
render: Remove texture atlas bits
render: Migrate things to llrender2d and move lluimage to llrender"
cmake: Move GLH to its own cmake and fix a buggle
misc: Remove 6000+ string allocations per frame