[Midnightbsd-cvs] src: BSDmakefile: turn on threads.

[laffer1 at midnightbsd.org]

Log Message:
-----------
turn on threads.  this might be reverted

Modified Files:
--------------
    src/usr.bin/perl:
        BSDmakefile (r1.18 -> r1.19)
        (http://cvsweb.midnightbsd.org/src/usr.bin/perl/BSDmakefile?r1=1.18&r2=1.19)