MDEV-4425 Regexp enhancements

Fixing compilation failure on Solaris.
The int64_t type was not defined because stdint.h was not included
due to a missing definition in pcre/config-cmake.h.in.

pcre/config-cmake.h.in

@@ -5,6 +5,8 @@
 #cmakedefine HAVE_SYS_TYPES_H 1
 #cmakedefine HAVE_UNISTD_H 1
 #cmakedefine HAVE_WINDOWS_H 1
+#cmakedefine HAVE_STDINT_H 1
+#cmakedefine HAVE_INTTYPES_H 1
 
 #cmakedefine HAVE_TYPE_TRAITS_H 1
 #cmakedefine HAVE_BITS_TYPE_TRAITS_H 1