Renamed get_closest_reported_order => get_closest_previously_reported_run to
make it clearer what the method does. I additionally updated the documentation
and changed a few names to get around python scoping rules.

git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@176904 91177308-0d34-0410-b5e6-96231b3b80d8
Created a static method on lnt.server.config.Config for generating a dummy
config and changed all usages in LNT of instantiation of a v4db to pass in a
config object to v4db (which is either a full blown config or a dummy config).

git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@176905 91177308-0d34-0410-b5e6-96231b3b80d8
Changed global status page to use machine.get_closest_previously_reported_run.

git-svn-id: https://llvm.org/svn/llvm-project/lnt/trunk@176909 91177308-0d34-0410-b5e6-96231b3b80d8