Code review comment for lp://staging/~dbarth/freerdp/wm-class-support

I cleaned up the patch, and most importantly, did get the change accepted upstream: https://github.com/FreeRDP/FreeRDP/pull/1132/files

Note that this is a version for the 1.1 branch, whereas this patch is for 1.0. The same patch will be merged upstream soon as well, as a backport of the one mentioned above.

In summary, upstream is happy with the patch and I think it could be taken as a distro patch with the assurance that the delta will disappear with the upcoming 1.0.3 and 1.1 releases.