[REGRESSION] bzr 1.17 does not use _knit_load_data compiled extension

[Andrew Bennetts]

Alexander Belchenko wrote:
> Hi,
> 
> While building my own custom installer for bzr.exe 1.17 I found that _knit_load_data_pyx C-extension
> actually is not imported at all in bzrlib. Instead there is still attempts to import old name
> "_knit_load_data_c" extension.
> 
> _knit_load_data_c was renamed to _knit_load_data_pyx by Vincent in bzr.dev revno 4472 but Vincent
> did not update all imports. At least not in 1.17.
> 
> I don't know is it critical for performance (I suppose -- yes), but it does not sound right for me
> anyway.

Ouch, yes.  That does seem to be case.  I think that's a critical bug worth
making a 1.17.1 release for.  Thanks for catching that!

-Andrew.