first bits of new spidermonkey/nspr build for windows.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3724 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/js/src/prmjtime.c

@@ -101,7 +101,7 @@ PRMJ_LocalGMTDifference()
     ltime.tm_gmtoff = 0;
     return timelocal(&ltime) - (24 * 3600);
 #else
-    return mktime(&ltime) - (24L * 3600L);
+    return (JSInt32)(mktime(&ltime) - (24L * 3600L));
 #endif
 #endif
 }