add PIRegularExpression

3rd/pcre2/vms/stdint.h

@@ -0,0 +1,9 @@
+#ifndef MY_VMS_STDINT
+#define MY_VMS_STDINT
+#include <inttypes.h>
+#include <limits.h>
+#include <stdbool.h>
+#define SIZE_MAX UINT_MAX
+#define UINT32_MAX  4294967295u
+#define UINT16_MAX             (65535)
+#endif