ewah/bitmap: silence warning about MASK macro redefinition
On PowerPC Mac OS X (10.5.8 "Leopard" with Xcode 3.1),
system header /usr/include/ppc/param.h[1] pollutes the
preprocessor namespace with a macro generically named MASK.
This conflicts with the same-named macro in ewah/bitmap.c.
We can avoid this conflict by using a more specific name.
[1]: Included indirectly via:
git-compat-util.h ->
sys/sysctl.h ->
sys/ucred.h ->
sys/param.h ->
machine/param.h ->
ppc/param.h
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>