proj: add 4.8.0 bottle.
bdw-gc: add 7.2e bottle.
objective-caml: update 4.01.0 bottle.
lighttpd 1.4.34

Closes #26757.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
disco 0.5

Closes #26869.

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