tests/test-debugrename.t

tests: run many tests in $TESTTMP/repo instead of $TESTTMP

This is useful so we can store other files in $TESTTMP
(in particular tests that use docket files (nodemap, dirstate-v2) keep
file uids in $TESTTMP/UID)

  $ hg init repo
  $ cd repo
  $ echo a > a
  $ hg ci -Am t
  adding a

  $ hg mv a b
  $ hg ci -Am t1
  $ hg debugrename b
  b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3

  $ hg mv b a
  $ hg ci -Am t2
  $ hg debugrename a
  a renamed from b:37d9b5d994eab34eda9c16b195ace52c7b129980

  $ hg debugrename --rev 1 b
  b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3