Fix typo in pgcvslog, used == instead of =.

src/tools/pgcvslog

 #!/bin/sh
 
-# $PostgreSQL: pgsql/src/tools/pgcvslog,v 1.28 2006/03/11 04:38:41 momjian Exp $
+# $PostgreSQL: pgsql/src/tools/pgcvslog,v 1.29 2006/03/15 03:24:17 momjian Exp $
 
 # This utility is used to generate a compact list of changes
 # for each release, bjm 2000-02-22
@@ -30,7 +30,7 @@
 #	/cvsroot/pgsql/doc/src/FAQ/FAQ.html
 #
 
-if [ "X$1" == "X-h" ]
+if [ "X$1" = "X-h" ]
 then	HTML="Y"
 	shift
 else	HTML="N"