made fast timer stack thread local
added LLThreadLocalSingleton
made LLThreadLocalPointer obey pointer rules for const
added LLThreadLocalSingletonPointer for fast thread local pointers
improvements on lifetime of lltrace core data structures
tweaks to thread local pointer handling so that static constructors/destructors
can safely call functions that use lltrace
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
moved threadrecorder classes into separate file
added Count trace type, which tracks value increases and decreases and can report churn
as well as overall growth rate
factored out lltrace::sampler into separate file
added rudimentary lltrace support to llstatgraph
made llstatgraph use param blocks more effectively
moves initial set of stats over to lltrace
removed windows.h #defines for min and max
created separate constructor for static allocation of sampler buffer
fixed start/stop/resume semantics of samplers and added sampler time interval tracking