auto-indent: wip on parsing parameter list upon ) entered.
auto-indent: get basic parameter lists parsing.
auto-indent: handle parse failures a bit more gracefully.
auto-indent: format function declaration parameters on the fly.
build: remove -Winline warning for now.

Nice to know, but generally just annoying with g_string_append_c().
auto-indent: track c-parse-helper changes in unit tests.