process < 1.1.0.2 requires directory < 1.2.

Fixes #1498.
Better error message.
Bump version.
Merge remote-tracking branch 'upstream/master'
Update bootstrap.sh.
Run selected executables only

Passes the extra arguments to 'cabal run' to the build phase so that
only the requested executables are built. Fixes #1503.
Fix a ticket link.
Merge remote-tracking branch 'upstream/master'