bug#39595: #39595: M-x compile still very line-length weak

[Mattias Engdegård]

> aaa:; perl -we 'print " "  x 9999;' #finishes right away.
> bbb:; perl -we 'print "\n" x 9999;' #takes several seconds, even on the 
> latest hardware. 

(The comments seem to have been swapped around, but we get the idea.)

This is not a rare edge case. Long lines are not uncommon in compilation 
output, and a sluggish M-x compile reflects badly on Emacs since it is a 
commonly used function.

The main culprit seems to be 'omake' -- try removing it from 
compilation-error-regexp-alist. There is still an annoying delay; further 
investigation is needed. (For instance, 'msft' occurs twice; this must be a 
mistake.)