omit Linux executables in a Windows build and vice versa

[guoci]

decreases Philosopher binaries size by about 45%

[prvst]

Hi @guoci, can you describe to me what you did here? Slack works fine if you prefer.

[guoci]

In the philosopher.exe (Windows binary) you have Linux executables (proteinprohet, peptideprophet, etc) packed within it and vice versa. This causes the compiled Philosopher binaries to be way larger than it needs to be.
This commits uses build constraints to omit cross-OS executables. So now philosopher.exe will only have Windows executables within it.

[prvst]

Did you test the program on both Windows and Linux, after removing the extra files?

[guoci]

not yet, will do later.

[prvst]

OK, in that case, I'll hold the merging to the RC branch until we know it works. Thanks for the update.