[Dcmlib] SC objects and removal of elements

[Todd Jensen]

> I am attempting to create a secondary capture (SC) object or post-processed MR images using GDCM 2.4.2 that includes origin (0020,0032) and directions cosines (0020,0037) but the code in gdcmImageHelper.cxx removes those elements before writing the file.

Typo there. I meant "I am attempting to create a secondary capture (SC) object OF post-processed MR images using GDCM 2.4.2 that includes origin (0020,0032) and directions cosines (0020,0037) but the code in gdcmImageHelper.cxx removes those elements before writing the file.