Update LAM to r20 and LibStub to 4

Author Scott Yeskie <scott@yeskie.com>
Author date 2016-07-01 00:41:20
Author local date 2016-06-30 17:41:20 -0700
Committer Scott Yeskie <scott@yeskie.com>
Committer date 2016-07-01 00:42:23
Committer local date 2016-06-30 17:42:23 -0700
Commit 035e6663afbc380f24d8fbef8d32135c3c6f5eb2
Tree 312f7cbe8748d84e07d97d56cc061482be49f696
Parent a23b0dcb26a9084505d61e66d1981aa178d668fd
Update LAM  to r20 and LibStub to 4