Handle some preprocessor macros to re-fix parentheses matching logic

[MichaelChirico]

Follow-up to #199 which implemented a really hacky fix that in turn broke some old logic for detecting erroneous C files. See discussion there.

Doing complete macro expansion seems prohibitively difficult (and is one of the biggest stumbling blocks I encountered in starting the parsec project), and xgettext itself doesn't seem to do so.

Maybe it's time to give up the 👻 of writing a half-assed targeted C parser & just let xgettext do the work, then build the calls ex-post? How would one even build a call in the cases causing this issue though?