ENH: logaddexp handling of same sign infs without warnings
TST: logaddexp and logaddexp2 with infs should issue no warnings
ENH: Cast non-object arrays to float in np.poly

Closes #5096. Casts integer arrays to np.double, to prevent
integer overflow. Object arrays are left unchanged, to allow
use of arbitrary precision objects.
Merge pull request #5116 from jaimefrio/poly-overflow

ENH: Cast non-object arrays to float in np.poly
DOC/MAINT: Python 2.6 or 3.2 required

Installation docs still stated Python 2.4 is supported, while not mentioning
3.x at all. Also corrected the statement that distutils is in python-dev on
Debian, while it's actually in the main package.

Several parts of the dev docs and some comments also referenced now-irrelevant
2.5 bugs/limitations.
Merge pull request #5120 from larsmans/install-docs

DOC: update installation docs
ENH: add small kernel correlate function

For cases like convolve/correlate with small kernel calling out to BLAS
dot is very slow as it goes through many wrappers and BLAS is typically
optimized for very large data.
So add a template utility file and add a special function for small dot
products.
2-4 times faster than openblas dot for kernel sizes < 11.
Merge pull request #5122 from juliantaylor/small-dot

ENH: add small kernel correlate function
ENH: better handling of NaNs in logaddexp
Merge pull request #5113 from jaimefrio/logaddexp_inf

ENH: remove warnings from logaddexp with same sign infs