Merge compile scripts into master

[meisterT]

We have several changes in ICPC-live, some of which we want to port and others we probably don't (or create a separate script).

• Filtering out submissions with incorrect filenames
• Entry point handling
• UTF8 handling

[eldering]

I'm happy merge UTF8 handling to master. I'm not sure about entry point handling, or at least we should still offer the old, fully auto-detected method. Filtering filenames I'd prefer not to merge too. Anyways, there's also the defining of ONLINE_JUDGE and DOMJUDGE, so we have to keep separate versions of the compile scripts anyways.

[thijskh]

What is the idea behind those defines?

[eldering]

Allowing contestants to have debugging code run on their own machine, but not on DOMjudge. ONLINE_JUDGE is a very common define across online judges.

[meisterT]

To be honest, I would remove the defines. If you run domjudge in an online judge setting and want to have them, they're easy to add.

I always remove them when hosting a contest to ensure consistency with the provided shell aliases.

If a team wants to have a difference between local and remote compilation they can always use their own defines, e.g. LOCAL_EXEC.