Merge ../ldforge into gl

- fixed: an overlay that failed to load no longer attempts to reload it over and over again

- renamed some enumerators, added license header to glcompiler.cc

- subfile coloring now works again

- renamed several GLCompiler members and methods

- only sort and strip duplicates from the objects-staged-to-compile list when actually compiling staged objects, this eliminates needless calls which slowed file loading down a ton.

- fixed zoom value not being initialized properly + some other minor things

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mercurial