CSSC uses a gets in a couple of places.  For security reasons, modern gnulib
does not allow this.  This patch allows it again.
--- CSSC-1.3.0/gl/lib/stdio.in.h	2010-05-15 00:15:35.000000000 +0200
+++ CSSC-1.3.0/gl/lib/stdio.in.h	2014-02-03 21:27:10.000000000 +0100
@@ -135,12 +135,6 @@
                  "use gnulib module fflush for portable POSIX compliance");
 #endif
 
-/* It is very rare that the developer ever has full control of stdin,
-   so any use of gets warrants an unconditional warning.  Assume it is
-   always declared, since it is required by C89.  */
-#undef gets
-_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
-
 #if @GNULIB_FOPEN@
 # if @REPLACE_FOPEN@
 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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