Add CSMap to the OEM solution file

[jbirch]

Currently, when building MapGuide, CSMap needs to be compiled individually. This should be added to the OEM.sln file.

As well, Hugues added:

If you add CSMap to Oem.sln you might be interested in the post
build steps located in the CSMap solution.  That solution builds
the dictionary compiler and then builds the dictionaries
automatically.

Building the dictionaries is done automatically in release mode
only to speed up the time in debug environments, since the source
dictionaries are not updated very often.

So, if that post build step is added, that also means the
dictionary compiler would need to be added to oem.sln

[jbirch]

It may also make sense to add a post-build step to Server.sln to copy the CSMap dictionaries into a subdir of the Server/Bin directory.

[jbirch]

I guess as a separate project, this could continue as separate build step, just like Fusion.