STYLE: Give error message when deprecated filename is encountered
STYLE: Give error message when deprecated filename is encountered

Provide an error message when an incorrect filename pattern
is encountered.

BRAINSia/ITK,thewtex/ITK,hjmjohnson/ITK,richardbeare/ITK,BRAINSia/ITK,hjmjohnson/ITK,richardbeare/ITK,BRAINSia/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,richardbeare/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,richardbeare/ITK,hjmjohnson/ITK,Kitware/ITK,Kitware/ITK,thewtex/ITK,Kitware/ITK,Kitware/ITK,richardbeare/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,BRAINSia/ITK,richardbeare/ITK,Kitware/ITK,BRAINSia/ITK,thewtex/ITK,Kitware/ITK,thewtex/ITK,hjmjohnson/ITK,thewtex/ITK,Kitware/ITK,hjmjohnson/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK