Log Message:
lang/gcc48: disable libssp
netbsd only: link against libc when building shared.

libssp is broken as it has headers like ssp/stdio.h which include
<ssp.h>, when only ssp/ssp.h exists.
simply building hello world (including stdio.h) with -D_FORTIFY_SOURCE
will fail.

netbsd building of shared was broken as it did not link against libc when
making shared. adjust the spec file so it will do this.

bump PKGREVISION

XXX - all the other versions of GCC likely need the same

thanks joerg for the help