Mesh Modifiers: refactor copying using a generic function
Fix for mesh deform modifier missing copy for flag.
EditMesh: wireframe tool, add offset and vgroup support (not used yet)
Modifier: New Wireframe Modifier

Based on patch originally by Thomas Beck,
uses options similar to solidify.
error in last commit, flag names.
error in last commit, missing normal update.
error in recent commit (this is getting ridiculous),
faces were flipping the wrong way
Fix for extrude poll functions not checking active object
Fix T37910: maya key configuration not working after recent changes.
Merge branch 'master' of http://git.blender.org/blender