Use newly introduced %%PARL_ARCH%% for dirname of architecture
dependent libraries.
(i.e. s!%%PERL_VER%%/i386-freebsd!%%PERL_VER%%/%%PERL_ARCH%%!)
Approved by: asami
something already there (PORTOBJFORMAT, OSVERSION) or move stuff from after
.include <bsd.port.mk> to before.
(This is not by any means the complete list but just the ones I've noticed
recently.)