Update libpcre to 10.45

libpcre/vms/openvms_readme.txt

@@ -0,0 +1,20 @@
+This is directory for OpenVMS support,
+provided shared and static library,
+pcre2grep  utility also.
+
+Requires:
+bzip2 library : http://vaxvms.org/clamav/
+zlib library  : http://vaxvms.org/libsdl/required.html
+
+
+To build the library please:
+
+@[.VMS]CONFIGURE.COM
+@BUILD
+
+After build, PCRE2$STARTUP.COM has been created
+it should be started before use (good place from LOGIN.COM)
+
+Feel free to contact:
+alexey@vaxman.de
+Alexey Chupahin