stdint.h has yet to appear on VMS.

Despite the compiler's claiming C99 compliance.  What we probably
really need here is I_STDINT, or perhaps HAVE_INTMAX and
HAVE_UINTMAX, determined by Configure and friends.  But in any case
07208e0 broke the build, so this
gets it going again for now.

sv.c

@@ -33,7 +33,7 @@
 #include "regcomp.h"
 
 #ifndef HAS_C99
-# if __STDC_VERSION__ >= 199901L
+# if __STDC_VERSION__ >= 199901L && !defined(VMS)
 #  define HAS_C99 1
 # endif
 #endif