useStackFrames and namemapper

Big picture: This namemapper thing is a rather unfortunate blemish on an 
otherwise excellent tool. Being that Cheetah is a pure text only tool, 
straightforward platform-agnostic installation without extra steps is a 
reasonable hope IMO. I know the warning message can be ignored, but the 
consumer just wants to get directly to the business of implementing 
templates. The warning message is seen by the end user, and is not very 
helpful.

The following patch would mostly remove the blemish:

< if not NameMapper.C_VERSION:
> if not NameMapper.C_VERSION and self.getSetting('useStackFrames'):

This would be backward-compatible workaround, and has no downside. The 
consumer would just do this:

t = Template(compilerSettings={'useStackFrames': False}, ...)

Thereby avoiding the message by explicitly disabling useStackFrames.


Little picture: I'm using Python 2.7 on Windows. There doesn't appear to 
be a _namemapper.pyd_2.7, and the 2.5 version depends on Python25.dll.

Adding a compilation step would be really painful because I'm not just 
using this on my workstation. I need to ask IT to auto-install and 
support tools like this, and I know they will be reluctant. So this 
makes it really hard for me to sell it to management.


-- 
- Ken Seehart

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