Allow Gnu gcc's to build python on OSX by removing -Wno-long-double,

-no-cpp-precomp, and -mno-fused-madd from configure.
 * r22183 added -no-cpp-precomp, which
   http://gcc.gnu.org/ml/gcc/2005-12/msg00368.html claims hasn't been
   needed since gcc-3.1.
 * r25607 added -Wno-long-double to avoid a warning in
   Include/objimpl.h (issue 525481). The long double is still there,
   but OSX 10.4's gcc no longer warns about it.
 * r33666 fixed issue 775892 on OSX 10.3 by adding -mno-fused-madd,
   which changed the sign of some float 0s. Tim Peters said it wasn't
   a real issue anyway, and it no longer causes test failures.
Fixes issue #1779871.

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 60765 .
+# From configure.in Revision: 61234 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.6.
 #
@@ -4538,7 +4538,8 @@ echo "${ECHO_T}$ac_cv_no_strict_aliasing_ok" >&6; }
 	    ;;
 	# is there any other compiler on Darwin besides gcc?
 	Darwin*)
-	    BASECFLAGS="$BASECFLAGS -Wno-long-double -no-cpp-precomp -mno-fused-madd"
+	    # -Wno-long-double, -no-cpp-precomp, and -mno-fused-madd
+	    # used to be here, but non-Apple gcc doesn't accept them.
 	    if test "${enable_universalsdk}"; then
 		BASECFLAGS="-arch ppc -arch i386 -isysroot ${UNIVERSALSDK} ${BASECFLAGS}"
 	    fi