updated make_node to use convinience functions

The body of make_node has been updated to make use of the newly revised methods of scan to parse arguments, hopefully increasing clarity.

updated make_node to use convinience functions
3c3c186b · Razvan Pascanu · ab5555c5 · 3c3c186b
--- a/theano/scan_module/scan_op.py
+++ b/theano/scan_module/scan_op.py