ccopen: Abtract filetype guessing to a function (fixes regressions, too)
ccopen: Abtract filetype guessing to a function (fixes regressions, too)

berquist/cclib,langner/cclib,andersx/cclib,gaursagar/cclib,jchodera/cclib,ATenderholt/cclib,ATenderholt/cclib,ghutchis/cclib,cclib/cclib,gaursagar/cclib,langner/cclib,cclib/cclib,jchodera/cclib,ben-albrecht/cclib,Schamnad/cclib,langner/cclib,cclib/cclib,ben-albrecht/cclib,berquist/cclib,berquist/cclib,Schamnad/cclib,ghutchis/cclib,andersx/cclib