add linkapps completion
drop unnecessary nil checks
mercurial 2.9.2

Updated to Mercurial 2.9.2

Closes #28204.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
setuptools 3.4.1

Closes #28195.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
pypy: add 2.2.1 bottle.
python: update 2.7.6 bottle.