Support for Record and Enumeral Types

[plpetkov]

Hi, I have been working on developing a plugin for automatic testcase generation and I am using gcc-python-plugin. Here's a few changes I made to support record and enumeral types.

I have a few more changes but will add them in a separate request.

Thanks.

[tromey]

IMO this would need documentation changes and tests in order to go in (though it's not up to me...)

Anyway I wanted to note that this addresses an issue I had here: https://fedorahosted.org/gcc-python-plugin/ticket/67

[tromey]

FWIW the enum patch doesn't work for me.

I had to make two changes: first, change the generate-c-tree.py patch to use PyGcc_TreeMakeListOfPairsFromTreeListChain; and second, fix gcc-python-tree.c to use that name rather than gcc_tree_list_of_pairs_from_tree_list_chain

With those two changes, it worked as I expected -- ".values" became a Python list of (name,value) pairs.

[tromey]

I pushed my version of the enumeral type patch here: https://github.com/tromey/gcc-python-plugin/tree/add-values-to-EnumeralType