tests/test-copy2.out

Added ability to clone from a local repository to a (new) remote one.

Rearranged the clone command a good bit to make sure it validates that
the source does exist and that the destination doesn't before doing anything.
Before I moved the source repo check it would create the destination
repository before it verified the source existed.

Moved the responsibility for creating the destination repo root directory
entirly into the localrepo class so that local to local cloning doesn't break.
This also simplifies the code a bit since it's no longer being done in both
clone and init.

Changed the names of the 'repo' and 'other' variables to 'dest_repo' and
'src_repo' to maintain my sanity.

Passes 82/83 tests. The only failure is the version number test, which I
suspect is supposed to fail since it comes from a generated file.

# should show copy
copy: foo -> bar
# shouldn't show copy
# should match
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       5      0       0 2ed2a3912a0b 000000000000 000000000000
renamed from foo:2ed2a3912a0b24502043eae84ee4b279c18b90dd
# should not be renamed
not renamed
# should show copy
copy: foo -> bar
# should show no parents for tip
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0      69      0       1 6ca237634e1f 000000000000 000000000000
     1        69       6      1       2 7a1ff8e75f5b 6ca237634e1f 000000000000
     2        75      82      1       3 243dfe60f3d9 000000000000 000000000000
# should match
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       5      0       0 2ed2a3912a0b 000000000000 000000000000
     1         5       7      1       2 dd12c926cf16 2ed2a3912a0b 000000000000
renamed from foo:dd12c926cf165e3eb4cf87b084955cb617221c17
# should show no copies