TST: linalg.qz test fails for complex64, so lower test tolerance.

Appears to be an ATLAS regression (3.8 is OK, 3.10 is not).  Closes gh-2842.
REL: in Windows binary builds, catch "too many open files" error.  See gh-2709.

This restarts the build once, which seems to be always enough.
Allows building binaries.  Building from source on Windows needs a similar
rebuild by hand.
BUG: sparse/arpack: build with second_NONE

Arpack doesn't need the timing routine for anything.  arpack-ng also
builds using second_NONE
BUG: optimize: stub out lbfgsb timer

Also the L-BFGS-B code doesn't really need to know the timings,
as they are not exposed by scipy.
REL: fix some issues in Paver release script.
BUG: sparse: fix crashes/wrong results in broadcasting multiply

The dia_matrices used to broadcast column/row vector elementwise
multiplications should be square.  The matrices are passed directly to
the internal _mul_* methods, which make no data size or shape checks, so
wrong size gives wrong results or segfaults with no warnings.

(backport of 6af4352)
TST: mark TestEig.test_singular as knownfail for 0.13.x.  See gh-2254.
DOC: rename the shapes for randint distribution.

Make them match the numpy random_integer generator's.
DOC: rename the shape parameter for Von Mises distribution.

Now it matches the numpy one.
DOC: change the shape name for vonmises in stats tutorial
MAINT: remove LyX files from stats tutorial docs
BUG: fix Python 3.1 compatibility, callable() not builtin.  Closes gh-2963.
TST: special: skip some tests on Py3 + Numpy < 1.6 due to Numpy bugs
(cherry picked from commit f1d941e851662a5e95fcd295bb344af1b8fd5f48)
BUG: fix import issue with ``python -OO`` (stripping docstrings).

Docstring formatting at top-level leads to failed import when Python is run
with ``-OO``.
BUG: fix all issues found when running test suite with ``python -OO``.

Closes gh-2952.
BUG: weave: fix issues with temporary directory usage
DOC: note weave fix in release notes
TST: weave: fix tests on windows
DOC: update 0.13.0 release notes.
ENH: weave: replace md5 with SHA-256

use more secure hash algorithm -- NIST approved SHA-256
update documentation related to this change