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

SH-3403 FIX implement unit conversion
LLUnit implements unit tracking and conversion
added support for LLUnit to LLTrace
duplicated most llstats into LLTrace equivalents

implemented minimal merging logic
made recordings ligher weight by moving live tracking data into threadrecorder

renamed LLTrace::ThreadTrace to LLTrace::ThreadRecorder
renamed LLTrace::Sampler to LLTrace::Recording

cleaned up API
samplers are now value types with copy-on-write buffers under the hood
removed coupling with LLThread

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

slave threads now pushing data to master thread

fixed various issues related to unit tests and LLThreadLocalPtr initialization and teardown

moved LLThread::lockData and unlockData back to header

moved LLThreadLocalPtr to llapr
fixed various startup race conditions for LLThreadLocalPtr

added LLThreadLocalPtr
broke llmutex out into llmutex.h
got primary sampling buffer under thread local storage

renamed some variables/methods

added multi-threaded sampling to LLTrace
first pass at data aggregation

added buffer merging and copying

created buffer type for storing trace data
added merging logic for different trace types

further development of lltrace (accumulator and storage classes)

further development of lltrace

lltrace cleanup

renamed some variables in lltrace

build fix

first pass at LLTrace framework

open root timer by default

cleaner implementation of llfasttimers...don't bother to share similarly named timers
just create multiple timers with same name...doesn't break anything

removed checkforDuplicates since we support duplicates again