Do not add -fomit-frame-pointer to CFLAGS when optimizations are disabled.

patch by Graham Booker, ffmpeglist atat cod3r dotdot com

Originally committed as revision 5832 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1016,22 +1016,25 @@ if test $targetos = Darwin; then
         gcc_version="`$cc -v 2>&1 | grep version | cut -d ' ' -f3-`"
         case "$gcc_version" in
             *2.95*)
-                CFLAGS="$CFLAGS -no-cpp-precomp -pipe -fomit-frame-pointer"
+                CFLAGS="$CFLAGS -no-cpp-precomp -pipe"
                 ;;
             *[34].*)
-                CFLAGS="$CFLAGS -no-cpp-precomp -pipe -fomit-frame-pointer -force_cpusubtype_ALL -Wno-sign-compare"
+                CFLAGS="$CFLAGS -no-cpp-precomp -pipe -force_cpusubtype_ALL -Wno-sign-compare"
                 if test "$lshared" = no; then
                    needmdynamicnopic="yes"
                 fi
                 ;;
             *)
-                CFLAGS="$CFLAGS -no-cpp-precomp -pipe -fomit-frame-pointer"
+                CFLAGS="$CFLAGS -no-cpp-precomp -pipe"
                 if test "$lshared" = no; then
                    needmdynamicnopic="yes"
                 fi
                 ;;
         esac
     fi
+    if test $optimize != "no"; then
+        CFLAGS="$CFLAGS -fomit-frame-pointer"
+    fi
 fi
 
 # Can only do AltiVec on PowerPC