added norm examples to linalg.rst docs
better comments to example, use np.array instead of matrix
converted linalg.rst to use mat except for schur factorization, explained numpy.linalg vs scipi.alg, examplained numpy.ndarray vs numpy.matrix
BUG: revision of wilcoxon signed rank test. Closes ticket 1744.

Wilcoxon signed rank test does not comply with MASS R package for
some datasets.
Merge branch 'wilcoxon_fix' into master.

Reviewed as https://github.com/scipy/scipy/pull/338
ENH: optimize/minpack: determine leastsq and fsolve epsfcn by dtype (fixes Trac #920)

In particular, if the objective function returns float32, use a large
enough epsilon for gradient estimation.
fixed typos, improved comments, removed redundant np.arrray constructors, added scipy may be faster comment
BUG: fix signal.medfilt test failure with 32-bit Python and numpy 1.7.0

See https://github.com/scipy/scipy/pull/378 for details.
Merge pull request #365 from cirosantilli/master

DOC: added norm examples to linalg.rst docs
Merge pull request #427 from pv/bug/920-float32-leastsq

ENH: optimize/minpack: determine leastsq and fsolve epsfcn by dtype (fixes Trac #920)
ENH: Added Pearson Type III distribution.
TST: Added tests for pearson3 distribution.
MAINT: several changes to stats.pearson3

* Moved PDF equation in log form to _logpdf.
* Changed to boolean mask based fancy indexing.
* Now _pdf just takes the exp() of _logpdf.
MAINT: in stats.pearson3, use gamma distribution in the background.
MAINT: more changes to stats.pearson3

* Nearly all pearson3 functions now use the gamma distribution functions.
* Added a _pearson3_preprocess to transform parameters to be able to use gamma
  functions.
* Corrected kurtosis in pearson3.stats.
MAINT: fix references, PEP8 and other small things in stats.pearson3.
Merge branch 'pull-336-pearson'
DOC: stats: add pearson3 to the docs
DOC: signal: add bode() to the docs