libprelude: improved to disable python support if python is not installed effectively

Note:

This change needs to be introduced because when cross-compiling configure
detects the python installation from the host which leads to enabling
python support even if there is no python installed in the target.

security/libprelude/libprelude.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../libprelude/libprelude.conf
-# Copyright (C) 2011 - 2012 The OpenSDE Project
+# Copyright (C) 2011 - 2013 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 #
 # More information can be found in the files COPYING and README.
@@ -18,6 +18,10 @@ if pkginstalled perl; then
 	var_append extraconfopt ' ' "--with-perl-installdirs=vendor"
 fi
 
+if ! pkginstalled -f python; then
+	var_append extraconfopt ' ' "--without-python"
+fi
+
 # we need swig to regenerate the binding sources and without it
 # building the "easy bindings" (high level API) will fail
 if pkginstalled -f swig; then