[PATCH] Cygwin: Make gcc-specific code in <sys/cpuset.h> compiler-agnostic

[Mark Geisert]

Mark Geisert wrote:
[... blah blah ...]

I got tripped up by misspelling and not being able to link clang{,++} programs on 
my test system.  I checked the .o files with objdump: Clang and clang++ both 
support __builtin_popcountl, but they emit code for the Hackers Delight algorithm 
rather than using the single-instruction popcnt.  Sorry for the confustion [sic].

..mark