config.gcc (tm_file): Update comments about relative pathnames.

2008-05-20  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* config.gcc (tm_file): Update comments about relative pathnames.

From-SVN: r135656

gcc/ChangeLog

+2008-05-20  Sandra Loosemore  <sandra@codesourcery.com>
+
+	* config.gcc (tm_file): Update comments about relative pathnames.
+
 2008-05-20  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-reassoc.c (fini_reassoc): Use the statistics

gcc/config.gcc

@@ -70,6 +70,10 @@
 #			This helps to keep OS specific stuff out of the CPU
 #			defining header ${cpu_type}/${cpu_type.h}.
 #
+#			It is possible to include automatically-generated
+#			build-directory files by prefixing them with "./".
+#			All other files should relative to $srcdir/config.
+#
 #  tm_p_file		Location of file with declarations for functions
 #			in $out_file.
 #