Fixing an error in the grading group of the 122 example

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15805 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Update Posets routines moebiusFunction and intersectionLattice

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15810 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Update projectivizeArrangement in Posets

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15811 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Added boundedRegions and realRegions to Posets

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15814 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Updated documentation / code formatting for Posets.

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15823 a8012f80-5f13-0410-8dc0-eb77bd940c0d
git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15824 a8012f80-5f13-0410-8dc0-eb77bd940c0d
commented out garbage test in the middle of the file

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15825 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Fix indexElements to throw an error when an element isn't in the Poset.

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15826 a8012f80-5f13-0410-8dc0-eb77bd940c0d
Merge git and svn histories

git-svn-id: svn://svn.macaulay2.com/Macaulay2/trunk@15827 a8012f80-5f13-0410-8dc0-eb77bd940c0d