present in the source tree which, with -I. option passed to the compiler,
would sometimes be picked up instead of expected `/usr/include/limits.h'.
Fix this by renaming local header file with a `${PORTNAME}_' prefix;
- Convert CPPFLAGS/LDFLAGS/MAKE_ENV variables to USES+=localbase;
- Rewrite condition expression in standard syntax to get rid of dependency
on `shells/bash', and wrap an overly long line while I'm here.
1ea5002959