KDevelop: cmake parser performance

[Hamish Rodda]

Hi Aleix,

I've done some basic profiling of the cmake parser's performance using 
callgrind/kcachegrind, and I've found that much of the time is spent in 
regular expression matching.

I haven't looked much into how the cmake support works, but is it 
theoretically possible to reduce the dependency on regular expressions?  It 
could potentially significantly speed things up (my modern pc takes a few 
seconds to parse the kdevelop project's cmake files)

Cheers,
Hamish.
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