[PATCH] A workaround for getting process memory map taking too long for sanitizers on FreeBSD

[Kostya Serebryany]

this is too much ifdef-ed code. 
Given the size of this patch I think it's better to create lib/sanitizer_common/sanitizer_procmaps_freebsd.cc and move all freebsd-specific logic there
(and remove all freebsd logic from lib/sanitizer_common/sanitizer_procmaps_linux.cc)

http://reviews.llvm.org/D3732