Reorganize the templates directory for possible future changes.

Now every template uses its own directory. Patches, prepost* files
and other related stuff are stored there.

--HG--
extra : convert_revision : bbc529ef161d9a59fe13a1d54ac058f77ea05845

templates/gcc/gcc-fix-amd64.diff

@@ -0,0 +1,16 @@
+Override default to match what other debian derivatives do.
+
+Rather than having lib being a link of lib64, do the the contrary:
+use lib and make lib64 a link of it.
+
+--- gcc/config/i386/t-linux64.orig	2008-10-22 03:33:48.513859286 +0200
++++ gcc/config/i386/t-linux64	2008-10-22 03:34:27.928844912 +0200
+@@ -13,7 +13,7 @@
+ 
+ MULTILIB_OPTIONS = m64/m32
+ MULTILIB_DIRNAMES = 64 32 
+-MULTILIB_OSDIRNAMES = ../lib64 $(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)
++MULTILIB_OSDIRNAMES = ../lib $(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)
+ 
+ LIBGCC = stmp-multilib
+ INSTALL_LIBGCC = install-multilib