md5sha1sum: add mirror.

References #3466.
findutils: add bottle.
gdbm: add bottle.
gnu-tar: add bottle.
gnupg: add bottle.
jemalloc: add bottle.
pth: add bottle.
tree: add bottle.
unixodbc: add bottle.
md5sha1sum: add bottle.
Remove brew-mirror-check command

This command uses removed API and is thus broken. It can always be
retrieved from the git history.
Remove download_strategy from SoftwareSpec
Update method call
create: pull requires out of method
create: make conditional more obvious
Hoist assignment to simplify a conditional
pygobject3: added comment to clarify which tests are which.

Closes #26929.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
youtube-dl 2014.02.22.1

Closes #26928.

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