[profile] argument for command line ignores ".sccprofile" (if used) and launches Default.sccprofile

[notNSANE]

This might cause a minor confusion since the user doesn't know if to use "profileName" or "profileName.sccprofile". I'll try editing the wiki later.

[kozec]

I've made that extension optional, so both "profileName.sccprofile" and "profileName" should work. That should be less confusing that old way.