Fixed a bug in vertexLm that caused colnames to not be returned, causing errors in vertexFDR

Line 1074 in minc_interface.R was commented out inadvertently in commit 3c6b8918b8de6. This has been fixed.
(cherry picked from commit 8d0aee0efb142a078e031d5acdb96d56c4e8e3aa)
Manually "cherry picked" the change to vertexAnova that Daniel applied to the R-2.15-minc-2.1.00 branch. This is not the proper way to do it. In the future we should have a separate branch for each feature or patch, so we can actually pull in that entire branch. Cherry picking a single commit out of a long list of commits from a branch can cause history issues.
Merge branch 'master' of github.com:mcvaneede/RMINC
Merge branch 'develop'
Merge branch 'master' into develop