Increase the minimum required cmake version to 2.8.7 (installed in Ubuntu 12.04 LTS)
Clean up the main CMakeLists.txt and stylize the output
Merge remote-tracking branch 'origin/master' into cmake

Conflicts:
	CMakeLists.txt
More clean up the main CMakeLists.txt
Set back glut as mandatory dependecy for DART core
Install glut for DART core build test
Print list of unit tests
Set back boost as a mandatory dependecy for DART core
Print list of unit tests as incidental information
Fix typo in CMakeLists.txt
Fix print format of list of unit tests
Improve API document generation
Merge pull request #274 from dartsim/doxygen

Improve API document generation
Merge pull request #272 from dartsim/cmake

Improve readability of cmake output