Cobra compiler no longer compiles csharp only source.

[hopscc]

I just noticed that cobra no longer will compile a commandline composed only of sharp source files - it used to.
e.g. something like

cobra hello.cs
cobra app.cs support.cs class.cs

I find this convenient for testing csharp code or compiling tweaked cobra translations when I cant remember where the various frameworks squirrel the csharp compiler or what the compiler incantation is supposed to be.

It now fails compilation with
"error: Cannot find a "main" method."

Some investigation indicates that its failing the IdentifyMainPhase (reasonably enough) so I'd imagine its been a regression since that code was added.

I have a working fix, patch forthcoming.

[hopscc]

Patch, new Test + relnote.

[Chuck]

Fixed in changeset:2301.

I used the test cases in the patch, but otherwise implemented it differently. Since IdentifyMainPhase was the culprit, I put the entire fix there.