Try to output the qualnames of methods that override the one we're visiting. Fail, printing the current one twice. Probably we need to call ->first() on something to go back to the base method and then iterate.
Hmm. That changed nothing. I guess we'll need to walk up the class hierarchy.
Improve tracebacks for farmed-out tasks.
Unparallize even the pre- and post-build hooks when debugging.
Stop mentioning re2 in the docs.

We don't use it anymore.
Refactor condenser and add "overridden" data gathering during post-build. Ref bug 1030312.

* Refactor condenser to make room for "overridden" gathering as a second whole-program analysis action during post-build. Where before we propagated an impl_only flag through several levels of functions calls, now we decompose the functions such that we can just pass arbitrary actions and predicates in.
* Lay down overrideloc and overridelocend fields in function lines in the compiler plugin.
* Stop concretizing all the zipdicts in memory before even processing them. Do them one at a time, concretizing only the result. This saves time and RAM.
Emit "overridden" needles, except that they point to declarations rather than definition at the moment.

* Fix a bug in clang.indexers.TreeToIndex where the path passed to FileToIndex was not source-relative.
* Reference the overridden method's name, not the overriding method's name, from process_override().
* Rename the "overridden*" fields in the CSV so they're not misleading.
* Stop processing overriddenlocs during process_function(); they're never used during the second (per-file) pass.
Make overridden needles point to definitions, not declarations.

I wasn't able to get the compiler plugin to emit the correct columns for definitions, so I changed the format of the global-pass data, and now we make use of the location information in the "function" lines emitted for the superclass method.
Make "overridden" searches work, modulo deep subclassing. Ref bug 1030312.
Typo and comment
Remove one more SkipTest from test_overrides.

Looks like I missed one.
Clarify links() docstring.
Make "overridden" needles take indirect inheritance into account. Ref bug 1030312.

Quit bucketting things by file. There was no point to that extra level, since qualnames are globally unique.