Remove -pthread as a compiler option. It was deprecated 2.5 years

ago, but not removed.

No reply from:	threads, kan, obrien

contrib/gcc/config/freebsd-spec.h

@@ -127,49 +127,13 @@ Boston, MA 02111-1307, USA.  */
   %{shared:crtendS.o%s} \
   crtn.o%s "
 
-/* Provide a LIB_SPEC appropriate for FreeBSD as configured and as
-   required by the user-land thread model.  Before __FreeBSD_version
-   500016, select the appropriate libc, depending on whether we're
-   doing profiling or need threads support.  At __FreeBSD_version
-   500016 and later, when threads support is requested include both
-   -lc and -lc_r instead of only -lc_r.  To make matters interesting,
-   we can't actually use __FreeBSD_version provided by <osreldate.h>
-   directly since it breaks cross-compiling.  As a final twist, make
-   it a hard error if -pthread is provided on the command line and gcc
-   was configured with --disable-threads (this will help avoid bug
-   reports from users complaining about threading when they
-   misconfigured the gcc bootstrap but are later consulting FreeBSD
-   manual pages that refer to the mythical -pthread option).  */
-
 /* Provide a LIB_SPEC appropriate for FreeBSD.  Just select the appropriate
-   libc, depending on whether we're doing profiling or need threads support.
+   libc, depending on whether we're doing profiling or not.
    (simular to the default, except no -lg, and no -p).  */
 
-#ifdef FBSD_NO_THREADS
 #define FBSD_LIB_SPEC "							\
-  %{pthread: %eThe -pthread option is only supported on FreeBSD when gcc \
-is built with the --enable-threads configure-time option.}		\
+  %{pthread: %eThe -pthread option is deprecated.}			\
   %{!shared:								\
     %{!pg: -lc}								\
     %{pg:  -lc_p}							\
   }"
-#else
-#include <sys/param.h>
-#if __FreeBSD_version >= 500016
-#define FBSD_LIB_SPEC "							\
-  %{!shared:								\
-    %{!pg: %{pthread:-lc_r} -lc}					\
-    %{pg:  %{pthread:-lc_r_p} -lc_p}					\
-  }"
-#else
-#define FBSD_LIB_SPEC "							\
-  %{!shared:								\
-    %{!pg:								\
-      %{!pthread:-lc}							\
-      %{pthread:-lc_r}}							\
-    %{pg:								\
-      %{!pthread:-lc_p}							\
-      %{pthread:-lc_r_p}}						\
-  }"
-#endif
-#endif