Fix macro definition for ptlib-2.10.10 compatibility
http://lists.packetizer.com/pipermail/h323plus/2012-December/002543.html

diff -ur a/include/openh323buildopts.h.in b/include/openh323buildopts.h.in
--- a/include/openh323buildopts.h.in	2012-09-21 05:53:21.000000000 +0200
+++ b/include/openh323buildopts.h.in	2013-03-05 19:26:25.251373540 +0100
@@ -35,7 +35,7 @@
 #include <ptbuildopts.h>
 #include <ptlib/../../revision.h>
 
-#if PTLIB_MAJOR == 2 && PTLIB_MINOR < 10
+#if PTLIB_MAJOR == 2 && PTLIB_MINOR <= 10
    #define PTLIB_VER ( PTLIB_MAJOR*100 + PTLIB_MINOR*10 + PTLIB_BUILD )
 #else
    #define PTLIB_VER ( PTLIB_MAJOR*1000 + PTLIB_MINOR*10 + PTLIB_BUILD )