Add top-level test target.
Add top-level test target.

Make targets in this file .PHONY (needed for test, harmless good
practice for the others).

LuaDist/lrexlib-tre,LuaDist/lrexlib-posix,LuaDist/lrexlib-posix,LuaDist/lrexlib-pcre,StoneDot/lrexlib,LuaDist/lrexlib-pcre,LuaDist/lrexlib-oniguruma,LuaDist/lrexlib-gnu,LuaDist/lrexlib-tre,LuaDist/lrexlib-oniguruma,StoneDot/lrexlib,LuaDist/lrexlib-gnu