Remove the now-unnecessary (and wrong anyway) Darwin hack

configure.in

@@ -101,21 +101,6 @@ dnl or the contents of libs.
 $php_shtool mkdir -p libs
 rm -f libs/*
 
-dnl Darwin 9 hack
-dnl Because the default debugging format used by Apple's GCC on Mac OS 10.5
-dnl causes errors in all current and past versions of Autoconf, we do a little
-dnl messing with the CFLAGS here to trick it.
-php_did_darwin9_cheat=0
-case $host_alias in
-*darwin9*)
-  hasg=`echo $CFLAGS | grep -E '(^-g)|([[:space:]]-g)'`
-  if test x"$hasg" = "x"; then
-    php_did_darwin9_cheat=1
-    CFLAGS="$CFLAGS -gstabs"
-  fi
-  ;;
-esac
-
 dnl Checks for programs.
 dnl -------------------------------------------------------------------------
 
@@ -1320,15 +1305,6 @@ SHARED_LIBTOOL='$(LIBTOOL)'
 
 CC=$old_CC
 
-dnl Finish the Darwin hack
-if test "$php_did_darwin9_cheat" -eq 1; then
-  if test "$PHP_DEBUG" = "1"; then
-    CFLAGS=`echo "$CFLAGS" | $SED -e 's/-gstabs/-g/g'`
-  else
-    CFLAGS=`echo "-O2 $CFLAGS" | $SED -e 's/-gstabs//g'`
-  fi
-fi
-
 PHP_CONFIGURE_PART(Generating files)
 
 CXXFLAGS_CLEAN=$CXXFLAGS