[patch cygwin]: Add missing 64-bit cygwin triplet to config.gcc

[Kai Tietz]

Hi,

an
ChangeLog

2013-04-18  Kai Tietz  <kti...@redhat.com>

        * config.gcc: Add x86_64-*-cygwin triplet.

Tested for x86_64-pc-cygwin.  I will apply it tomorrow, if there are
no objections.

Kai

Index: config.gcc
===================================================================
--- config.gcc  (Revision 197997)
+++ config.gcc  (Arbeitskopie)
@@ -3722,8 +3722,10 @@
                ;;
        i[34567]86-*-solaris2* | x86_64-*-solaris2.1[0-9]*)
                ;;
-       i[34567]86-*-cygwin* | i[34567]86-*-mingw* | x86_64-*-mingw*)
+       i[34567]86-*-cygwin* | x86_64-*-cygwin*)
                ;;
+       i[34567]86-*-mingw* | x86_64-*-mingw*)
+               ;;
        i[34567]86-*-freebsd* | x86_64-*-freebsd*)
                ;;
        ia64*-*-linux*)