Check that the argument passed to reversed() is a proper sequence.

--HG--
branch : reversed
Merge with default.

--HG--
branch : reversed
Mappings aren't accepted by reversed().

--HG--
branch : reversed
Add ChangeLog entry.

--HG--
branch : reversed
Update message.

--HG--
branch : reversed
Ignore deques (can't retrieve special methods).

--HG--
branch : reversed
Handle iter builtin.

--HG--
branch : reversed
Enhance used-before-assignment check to look for nonlocal uses.

--HG--
branch : nonlocal
Add bad-exception-context warning for checking that `raise ... from ...` sets a proper exception context.

--HG--
branch : exception_context
Fix code-quality mail list links.
Fix false positive for catching-non-exception, for C based exceptions.
Use `all` for a clearer intent
Merged in PCManticore/pylint (pull request #78)

Fix false positive for catching-non-exception, for C based exceptions.
Merge with default.

--HG--
branch : exception_context
Add new test case for false positive prevention.

--HG--
branch : exception_context
Fix bitbucket #126, don't crash when encountering an AssAttr node in is_defined_before.
Add missing-submodule check for fixing issue #126.

--HG--
branch : all_false_positive
Added tag pylint-debian-version-1.1.0-1 for changeset 55c5af5c213c
Added tag pylint-version-1.1.0 for changeset a520db270ed7
changelog cleanup