Fix building GCC 5 with clang 4.0

Obtained from FreeBSD ports r432958
https://svnweb.freebsd.org/ports?view=revision&revision=432958
"doesn't compile with recent versions of libc++, because it attempts to redefine abort():
/usr/include/c++/v1/functional:1398:2: error: no member named 'fancy_abort' in namespace 'std::__1'; did you mean simply 'fancy_abort'?
        _VSTD::abort();
        ^~~~~~~
/usr/include/c++/v1/__config:383:15: note: expanded from macro '_VSTD'
#define _VSTD std::_LIBCPP_NAMESPACE"

external/gpl3/gcc/dist/gcc/auto-profile.c

@@ -19,11 +19,11 @@ along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
-#include "system.h"
 
 #include <string.h>
 #include <map>
 #include <set>
+#include "system.h"
 
 #include "coretypes.h"
 #include "hash-set.h"

external/gpl3/gcc/dist/gcc/graphite-isl-ast-to-gimple.c

@@ -38,6 +38,7 @@ extern "C" {
 #endif
 #endif
 
+#include <map>
 #include "system.h"
 #include "coretypes.h"
 #include "hash-set.h"
@@ -75,7 +76,6 @@ extern "C" {
 #include "tree-scalar-evolution.h"
 #include "gimple-ssa.h"
 #include "tree-into-ssa.h"
-#include <map>
 
 #ifdef HAVE_isl
 #include "graphite-poly.h"

external/gpl3/gcc/dist/gcc/system.h

@@ -224,6 +224,7 @@ extern int errno;
 #ifdef __cplusplus
 # include <algorithm>
 # include <cstring>
+# include <new>
 # include <utility>
 #endif
 #endif