Log Message:
Dynamically generate the part of the PLIST for libfreebl.  This is because
the exact names of the freebl libraries depends on the platform and they
have a habit of changing even on minor releases.  This causes these mozilla
packages to be broken quite a lot on platforms other than NetBSD/i386.
Hopefully this fix will last longer than previous ones.  pkgrevision bumps
all around.