[help-GIFT] patch 84

[risc]

This patch is paticularly for david's eyes, as it gets rid of an ugliness in 
the code.

It takes memory clearing responsibilities out of gabor.c, and does them all at 
once in extract_block_features.c.

3% speed improvement.

My next patch should be my last straight up speed optimization (good for 
another 8%!), but it renames a variable to a macro all *over* the place,
so I havent submitted it yet.

Machine: opteron 246HE
Mainline speed: 1.0
CVS speed, with this patch: .44

Other people are welcome to criticize as well. ;)

Julia Longtin <address@hidden>