Merge branch 'master' into logo
add list around theano_function outputs
raise NotImplementedError if theano.stacklists dne

At the time of this commit this feature in Theano is not yet released
and so depends on the development version.
subs(...).evalf -> evalf(subs=...)
Exit with p.returncode!=0 on errors
Add instructions to build logos
Remove pregenerated logos
Better explanation of the logx parameter

Also the doctests were polished.
Merge pull request #2444 from certik/logx

Document the logx parameter in Expr.nseries()
Change ./generate_logos.py call
Add stdin=subprocess.PIPE options for Popen()
Use ico file from _build/logo/
Implement membership test operator (method __contains__) for Order
Raise NotImplementedError when mixing Order at 0 and oo.
Fix Order(exp(x), x, oo) (issue 4108).
Merge branch 'master' into 1475_sec_csc.
Fix merge problem.
Conflicts:
	AUTHORS
Rebased with master. Corrections after skirpichev review.
also set test for 1**NaN == NaN
New import diagnostics: list problems, list imports

Keep this test on @XFAIL for now, the errors that it finds will go in a separate commit.
Usage text correction.