liealgebras_2: Type B
liealgebras_2: some updates
Fix typo
UnXFAIL test_real_Pow

    This test doesn't fail anymore.  And mentioned in docstring
    statements (pi/log(x)).is_real is NOT True (with no assumptions
    on x) long time ago, since commit 6ee8b34.
Fix and UnXFAIL test_rational_products
Fix and UnXFAIL test_wallis_product
Fix and UnXFAIL test_gosper_nan
Karr convention: change limits in doit() for symbolic integers

    This is a small modification for commit dda493
Updating type_b
Fixing type_b
Fixing issues with type B
Adding tests to test_args
Merge pull request #2315 from skirpichev/misc

Misc small fixes
Merge pull request #2259 from meclark256/liealgebras_2

Liealgebras 2
Merge branch 'single_code_base' of git://github.com/flacjacket/sympy into pull-request-2318

Conflicts:
	sympy/liealgebras/cartan_type.py
Port sympy/liealgebras/type_b.py
Merge pull request #1 from certik/pr2318_merge

Merge the latest master