Now that recurselist is no longer a list, it doesn't make
sense to call it recurselist.  recurseset is available, but
that's not as easy to read/say compared to recurselist.
Call this recursedeps, instead.

R=iannucci@chromium.org
BUG=390246

Review URL: https://codereview.chromium.org/363103002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@281107 0039d316-1c4b-4281-b951-d872f2087c98