Add fpcalc.exe and discid.dll to ignore list

fpcalc and discid.dll are put in the development directories when you
build the development environment according to the instructions on the
musicbrainz web site - and they should not form part of the repo.
Revert "Add fpcalc.exe and discid.dll to ignore list"

This reverts commit b5d48b5f958790cf3181b374de4e1e7c79bfb3e3.
Add fpcalc.exe and discid.dll to ignore list

fpcalc and discid.dll are put in the development directories when you
build the development environment according to the instructions on the
musicbrainz web site - and they should not form part of the repo.
Switch to *.exe as recommended by Lukas
Switch to *.exe (with new line at end) as recommended by Lukas
Merge pull request #101 from Sophist-UK/sophist_ignore_fpcalc_discid

Add *.exe to ignore list