cppfiles.c: Clarify comments.

	* cppfiles.c: Clarify comments.
	* cpphash.h: Likewise.
	* cpplib.h: Likewise.
	* cppmacro.c: Likewise.
	* mkdeps.h: Likewise.

From-SVN: r68496
diff --git a/gcc/cppfiles.c b/gcc/cppfiles.c
index cd6fd6c..ceb6413 100644
--- a/gcc/cppfiles.c
+++ b/gcc/cppfiles.c
@@ -741,7 +741,7 @@
 }
 
 /* Locate HEADER, and determine whether it is newer than the current
-   file.  If it cannot be located or dated, return -1, if it is newer
+   file.  If it cannot be located or dated, return -1, if it is
    newer, return 1, otherwise 0.  */
 int
 _cpp_compare_file_date (cpp_reader *pfile, const char *fname,