(svn r16422) -Codechange: use const_cast for removing const and warn when const is (accidentally?) removed using C-style casts.

config.lib

@@ -1103,7 +1103,7 @@ make_cflags_and_ldflags() {
 		if [ $cc_version -ge 29 ]; then
 			CFLAGS="$CFLAGS -Wall -Wno-multichar -Wsign-compare -Wundef"
 			CFLAGS="$CFLAGS -Wwrite-strings -Wpointer-arith"
-			CFLAGS="$CFLAGS -Wno-uninitialized"
+			CFLAGS="$CFLAGS -Wno-uninitialized -Wcast-qual"
 
 			CC_CFLAGS="$CC_CFLAGS -Wstrict-prototypes"
 		fi