Implemented active wait feature.

Waiting thread now can process tasks and act as additional worker
thread.

Added Yield support for tasks

Fix compilation warning

Add priority for tasks

Improve built-in profiler

Added macro _DARWIN_C_SOURCE for OSX

Fixed OSX build

Fixed OSX build

Fixed POSIX build

Fixed Posix build

Rewrote CreateFromCurrentThreadAndRun

Increase queue size

Fixed posix build

Fiber storage now use lock-free queue.

Refactor internal profiler.

Completely remove WaitGroupAndYield

It was a bad architecture decision, WaitGroupAndYield cost too much to
work properly (global mutex per group). Anyway this behaviour could be
implemented through

Completely remove WaitGroupAndYield

It was a bad architecture decision, WaitGroupAndYield cost too much to
work properly (global mutex per group). Anyway this behaviour could be
implemented through parent/child tasks and is much more natural for
architecture.

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Fixed OSX build

Fixed Posix build

Fixed Posix

Fix posix build

Threads now has priority and can be binded for cpu core

Posix compilation fix

Fixed posible integer overflow in posix events

Added more checks inside posix events

Added SetCurrentThreadName function.

- SetCurrentThreadName function
- Updated posix event implementation (more safe)

Fixed OSX warning and relax stress test time constraints