Put contextLimitedPolynomal and contextInequalities back into one file (since the problem that caused these to be broken into separate pieces was resolved by SHA d636150 in openwebwork/webwork2-dev).  Note that these libraries need to be removed from the library list in the configuration file for webwork2.
Merge pull request #21 from dpvc/package_errors

Put contextLimitedPolynomal and contextInequalities back into one file