Bug 1083686 part 0 - Don't set MOZ_MEMORY_API to static for OSX in replace_malloc.c. r=njn

It appears to be an unnecessary optimization, since the compiler is still inlining
the functions when they're not marked static. OTOH, following patches will require
the _impl functions not to be static.
Bug 1083686 - Tool to capture and reproduce Firefox's memory allocations. r=njn,r=mshal

--HG--
rename : mozglue/build/Makefile.in => mozglue/build/replace_malloc.mk
Bug 1084161 - Use PLDHashTableOps to allocate PLDHashTables. r=nfroyd
Bug 1084151 - Update sccache to 8ff474e. r=mshal