Merge commit '2470270f500c728d10b8895314d8d8b07016e37b' into grubba/typechecker-automap
* commit '2470270f500c728d10b8895314d8d8b07016e37b': (18681 commits)
Removed the old typechecker.
Calendar: Added some further tzdata files.
The tzdata directory should now be fully in sync with the tzdata2014h dist.
Calendar.mkrules: Ignore tzdata files that aren't used.
Calendar.mkrules is only interested in the tzdata files that contain
timezone rules, so ignore known tzdata files that aren't such.
Also adds a corresponding .gitignore file.