ISO C11 removes the specification of gets() from the C language, eglibc 2.16+ removed it

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Upstream-Status: Pending
Index: tar-1.27/gnu/stdio.in.h
===================================================================
--- tar-1.27.orig/gnu/stdio.in.h	2013-06-29 08:54:26.000000000 +0300
+++ tar-1.27/gnu/stdio.in.h	2013-10-16 15:22:46.977204737 +0300
@@ -710,10 +710,12 @@
 /* It is very rare that the developer ever has full control of stdin,
    so any use of gets warrants an unconditional warning; besides, C11
    removed it.  */
+#if defined gets
 #undef gets
 #if HAVE_RAW_DECL_GETS
 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
 #endif
+#endif
 
 
 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
