Minor improvement of divide and conquer divapprox based on proof in paper.
Try to stop git complaining about certain files changing.
Further prevention of git complaining.
Merge remote-tracking branch 'brian/master'
Ran autoreconf -i to change autotools versions to those of development machine.
Update .gitignore after autoreconf -i.
Put back our hacked config.guess and config.sub.
Revert changes to yasm made by autoreconf -i.
Comments in sub_err1_n/sub_err2_n.asm.
Added comments to add_err1_n/add_err2_n.asm and fixed some comments in
sub_err1_n/sub_err2_n.asm.
Cleaned up lots of C code, adding lots of whitespace.
Further C code cleanups.
Fix a slowdown in FFT (actually in mulmod_2expp1_basecase) when squaring.
Added some GMP m4 macros for new sqr_basecase code + license changes.
Use GMP version of sqr_basecase on AMD K8/K10/etc and Intel Core2/Penryn/etc.
The GMP sqr_basecase is *way* faster on netburst.
Update tuning values for netburst.
GMP sqr_basecase is faster on westmere.
Sandybridge is faster with GMP sqr_basecase.
Switched to using correct basecase threshold in kara_sqr_n.