Rename regex.c to regex_old.c

libc/misc/regex/Makefile.in

@@ -6,7 +6,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-CSRC:=regex.c
+CSRC:=regex_old.c
 
 MISC_REGEX_DIR:=$(top_srcdir)libc/misc/regex
 MISC_REGEX_OUT:=$(top_builddir)libc/misc/regex

libc/misc/regex/regex.c → libc/misc/regex/regex_old.c

@@ -651,12 +651,12 @@ typedef enum
 #  ifdef MBS_SUPPORT
 #   define WCHAR
 #   define INSIDE_RECURSION
-#   include "regex.c"
+#   include "regex_old.c"
 #   undef INSIDE_RECURSION
 #  endif
 #  define BYTE
 #  define INSIDE_RECURSION
-#  include "regex.c"
+#  include "regex_old.c"
 #  undef INSIDE_RECURSION
 # endif
 #endif