Revert of dsymutil part of
http://gcc.gnu.org/ml/gcc-patches/2006-09/msg00057.html
See http://article.gmane.org/gmane.linux.gentoo.alt/4327

--- gcc/config/darwin.hdsymutil	2015-01-21 22:22:52.000000000 +0100
+++ gcc/config/darwin.h	2015-01-21 22:42:24.000000000 +0100
@@ -337,12 +337,7 @@
     %{fnested-functions: -allow_stack_execute} \
 "/* APPLE LOCAL prefer -lSystem 6645902 */"\
     %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}} \
-"/* APPLE LOCAL begin mainline 4.3 2006-10-31 4370146 */"\
-    %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}\n\
-%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
-"/* APPLE LOCAL end mainline 4.3 2006-10-31 4370146 */"\
-    %{.c|.cc|.C|.cpp|.cp|.c++|.cxx|.CPP|.m|.mm: \
-    %{g*:%{!gstabs*:%{!g0: dsymutil %{o*:%*}%{!o:a.out}}}}}}}}}}}}"
+    %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
 /* APPLE LOCAL end mainline */
 
 #ifdef TARGET_SYSTEM_ROOT