COMP: compile with Visual Studio in conformance mode AKA /permissive-

[dzenanz]

Upstreaming change from InsightSoftwareConsortium/ITK#261.

[hjmjohnson]

@dzenanz Thanks for porting the ITK identified fix upstream.

[malaterre]

@dzenanz I am getting confused...why is this patch only applying onto gdcm/master ? Did ITK recently moved onto gdcm from master ?

[dzenanz]

Periodically, we update versions of libraries bundled with ITK. The latest update of GDCM was via InsightSoftwareConsortium/ITK#264. And the script which does the updating targets release tag. It maybe falls back to master if there is no release tag?

[malaterre]

@dzenanz No everything is just fine. In fact it seems I never backported to release branch a patch you are using within ITK. Everything is fine, the script is working as expected. I am hoping to package the next release anyway from master real time soon.

[dzenanz]

Oh, you thought it would have made more sense to merge it into release branch? That's why I was confused by your confusion 😄