Remove comment that is no longer applicable

Since r181446 the m_private_run_lock has been used for all platforms.
[msan] Unpoison param-tls in signal handler wrapper.

This an entry point from uninstrumented code.
[sanitizer] Intercept inet_aton.
[sanitizer] Fix TSan build.
Fix some more mismatched integer types causing compiler warnings.
Using offsetof to an item within an array is an extension so mark it as such to avoid compiler warnings.
[sanitizer] Intercept sysinfo.
[Sema] Call CheckParmForFunctionDef on ObjC method parameters

CheckParmForFunctionDef performs standard checks for type completeness
and other things like a destructor check for the MSVC++ ABI.
Update for Linux->POSIX rename

Revision r147613 (2341d35) renamed this file with s/Linux/POSIX/, but
header guards and comments were not updated to match.
Eliminate missing virtual destructor warning on FreeBSD

Akin to r181712 (88e529b7) of Linux/ProcessMonitor.cpp
Convert a use of PathV1.h.
Use canonical termios.h location
Update comment to match class name
Sync FreeBSD files to Linux equivalents, to reduce noise in diff

- Sort functions in the same order
- Match whitespace
- Remove commetned out code
- Make filename in comments match filename
tsan: update dynamic export syms file
now it includes proper functions (including interceptors)
and does not include local functions that lead to build failures
Tests require GNU make, called gmake on FreeBSD