Since these are just interpreted comments, there's 0 impact on actual code.
This removes all lines that match /* vim: set(.*)tw=80: */ with S&R -- there are
a few others scattered around which will be removed manually in a second part.
* Remove the generic attr preparsing mechanism from BeforeSetAttr and just preparse class attributes directly in the one place that needs to do it
* Move calls to BeforeSetAttr to after AttributeWillChange
* Remove UpdateState calls in BeforeSetAttr
* Move calls to AfterSetAttr to before UpdateState when manipulating attributes
* Remove UpdateState calls from AfterSetAttr, since they are no longer needed there
Tag #1375
