build: windows should build

[passyur]

This will serve as a symbolic issue for all windows compatbility-related issues.

Would be nice if we could get CMOD/LASS/LASSIE running on Windows. LASSIE will be the least difficult by virtue of Qt, but the other two require a lot of Windows-conscious function choices and a reduction in the use of glibc.

When to close

When Windows compatibility is ensured (i.e., builds, no major bugs/behavior differences, we feel comfortable with users running the .exe, etc).

[eightfifteenthspisquared]

Thanks to @DiyunZ we now have a portable version for windows that seems to run well. I think we should close this issue once some more testing has been done.