BUG: stub out spurious methods of Akima1DIntgerpolator

from_spline and from_bernstein_basis are inherited
from PPoly, and neither produces an Akima interpolator.
DOC: add See Also sections to Pchip and Akima interpolators
ENH: avoid repeated matrix inverse

The `sum_cov` term doesn't change, so it's faster to use a factorized version and solve.
BUG: in integrate/quadpack.h, put all declarations before statements.

This was causing a build failure on some Python 3.4 systems due to
-Werror=declaration-after-statement being used there by accident
(see http://bugs.python.org/issue21121)

Issue was introduced in gh-2362.
Merge pull request #3774 from rgommers/decl-after-statement

BUG: in integrate/quadpack.h, put all declarations before statements.
DOC: edit scipy.optimize.show_options parameters

Add maxfun parameter to output of parameters for L-BFGS-B. Fix maxiter
description. See ticket 3760.

closes gh-3760
Merge pull request #3776 from Jacobcvt12/lbfgsb-show-options

DOC: edit scipy.optimize.show_options parameters
BUG: use correct MAXGAM in beta.c

AFAICT the correct constant is used everywhere in cephes.

Also try harder to use the best order of operations when
calculating beta from gammas.
BUG: don't try to calculate beta in betainc, just call it.

fixes gh-3761
TST: sparse: add regression test for sparse matrix typemaps
BUG: sparse: fix omitted types in sparsetools typemaps

Fixes gh-3780
DOC: removed repetitive text, fixes #3782
Merge pull request #3783 from gregcaporaso/issue-3782

DOC: removed repetitive text, fixes #3782
BUG: Fix lombscargle ZeroDivisionError

Change calculation of tau to use atan2 function instead of atan.

closes gh-3787
Merge pull request #3744 from ev-br/akima_stub

stub out inherited methods of Akima1DInterpolator
Merge pull request #3781 from pv/fix-sparse-typemaps

BUG: sparse: fix omitted types in sparsetools typemaps
MAINT: update copyright notice to 2014.
MAINT: fix reST errors in integrate.quad docstring.
BUG: fix issue in scipy.special tutorial example.  Closes gh-3784.

Thanks to @CraigVD for reporting and suggestion a fix.

[ci skip]
TYPO: sheroidal -> spheroidal

Spotted this misspelling in the online docs