spaces in action names

[Evan Martin]

http://code.google.com/p/chromium/issues/detail?id=51288
is that we broke with a new version of GNU make.

It stems from an action that has a space in its name, found in Chrome
(chrome/common_constants.gypi):
'action_name': 'Make chrome_version.cc',

I can fix the Make generator to work around this, or we can disallow
spaces in action names.
What do you say? (I only hesitated to consider the latter when I sat
down to implement the former, and discovered the existing gyp tests
are careful to use underscores in action names.)

[Mark Mentovai]

The only reason the action names exist as they do is to show up in
various UIs and be easily tied back to where they came from in
.gyp-land. Considering that they’re UI-visible, we rely on spaces
pretty heavily in Mac-land.

Mark