Merge pull request #116 from nh2/fix-fromJust

Fix fromJust crash
Using fromMaybe.
cosmetic changes.
fixing #118.
cosmetic change.
Fix spelling error
Merge pull request #119 from dysinger/spelling-error

Fix spelling error
using -no-user-package-db for GHC >= 7.6.
Adding HCAR tex file.
fixing typo.
For HCAR May 2013.
reverting a first line.
hcar update.
replacing fromJust with an exception handling.
fixing a test.
test case for #118.
simplify the usage of IOChoice.
a bug fix of missing cabal dir.
ver bumps up.
Changing GHCMod as a library.