libproxy: fixed to install perl bindings into 'vendor_perl' directory

develop/libproxy/libproxy.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../libproxy/libproxy.conf
-# Copyright (C) 2010 The OpenSDE Project
+# Copyright (C) 2010 - 2011 The OpenSDE Project
 #
 # More information can be found in the files COPYING and README.
 #
@@ -13,3 +13,9 @@
 # --- SDE-COPYRIGHT-NOTE-END ---
 
 autogen=0
+
+# perl bindings
+if pkginstalled perl; then
+	# install into 'vendor_perl' directory
+	var_append cmakeopt ' ' "-DPERL_VENDORINSTALL=yes"
+fi