Update adol-c.rb

making suggested changes to code.

Remove comment

Update adol-c.rb to use most recent v2.5.0

Replace opoo with odie

update odie message

Make suggested change to clang/OpenMP handling

Change build.include? to build.with?

Make suggested change to --with-colpack flag

Revert back to adol-c v2.3.0

ADOL-C v3.5.0 (https://projects.coin-or.org/ADOL-C) is the most recent version, but is not compiling under Mac 10.9.2.
Merge branch 'master' of github.com:josephwb/homebrew-science