Only beautify generated code if savec is enabled 
Only beautify generated code if savec is enabled 

[reviewed by sung a while ago]

It turns out that beautify takes a pretty significant amount of time. Around
95% of the total codegen time so around half a second. By turning this off it
will make compiles that do not use savec faster. This should result in  a ~30
minute speedup for nightly testing. 


git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@22819 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,hildeth/chapel,chizarlicious/chapel,hildeth/chapel,sungeunchoi/chapel,hildeth/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,hildeth/chapel