tetex: fixed to avoid shared files with texi2html by disabling the built-in texi2html if the texi2html is already installed

textproc/tetex/tetex.conf

@@ -2,6 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../tetex/tetex.conf
+# Copyright (C) 2010 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -37,3 +38,6 @@ var_append confopt ' ' "--disable-multiplatform"
 # --disable-dialog
 # --with-uniterm ???include Uniterm window support
 
+if pkginstalled texi2html; then 
+	var_append extraconfopt ' ' "--without-texi2html"
+fi