Building is slow!

[Ivan Trombley]

There are issues with using "--build-mode=singleFile --parallel". 
On Windows I get errors saying that it can't write out some 
intermediate files (it looks like the file names may be too long 
for Windows) and on Linux, it makes the executable at least 3 MB 
larger in release mode. Also, it doesn't always seem to make 
building faster. On a 2 core i7 machine, it actually takes nearly 
twice as long to build.