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
In-Conjunction-With: Satoshi's patch to bsd.port.mk
(note: unlike the last change in perl5 versions, I have only upgraded p5-* ports, not other ports that rely upon perl5.)