[MERGE][0.91?] './setup.py install' on systems without gcc didn't work for me

[Aaron Bentley]

Aaron Bentley has voted tweak.
Status is now: Conditionally approved
Comment:
The formatting and phrasing of the warning messages should be unified. 
Otherwise, looks okay.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C46E92D34.9020106%40ukr.net%3E