[StGIT PATCH 0/4] Clean up subprocess calling

We had nearly ten separate functions implementing about five different ways of calling a subprocess. This series cleans it up. The aggregate diffstat looks scary, but that's mostly because these functions were called in a bajillion different places.

If you choose to pull from my repository (which I highly recommend!), note that this series is built on top of the misc fixes, so you get those as well.

The following changes since commit 216a1524c4acbd9952ffaeec054e30cf14dde5fc:
  Karl Hasselström (1):
        Compile regexp just once

are available in the git repository at:

  git://repo.or.cz/stgit/kha.git run

Karl Hasselström (4):
      Refactor output handling to break circular dependency
      Refactor subprocess creation
      Assert that the argument to Run is a sequence of strings
      Add optional logging of subprocess execution

 stgit/basedir.py             |   13 +-
 stgit/commands/applied.py    |    1 +
 stgit/commands/assimilate.py |    1 +
 stgit/commands/branch.py     |    1 +
 stgit/commands/clean.py      |    1 +
 stgit/commands/commit.py     |    1 +
 stgit/commands/common.py     |    1 +
 stgit/commands/delete.py     |    1 +
 stgit/commands/diff.py       |    1 +
 stgit/commands/export.py     |   10 +-
 stgit/commands/files.py      |    1 +
 stgit/commands/fold.py       |    1 +
 stgit/commands/hide.py       |    1 +
 stgit/commands/id.py         |    1 +
 stgit/commands/imprt.py      |    1 +
 stgit/commands/log.py        |    1 +
 stgit/commands/mail.py       |    1 +
 stgit/commands/patches.py    |    1 +
 stgit/commands/pick.py       |    1 +
 stgit/commands/pull.py       |    1 +
 stgit/commands/push.py       |    1 +
 stgit/commands/refresh.py    |    1 +
 stgit/commands/rename.py     |    1 +
 stgit/commands/series.py     |    1 +
 stgit/commands/sync.py       |    1 +
 stgit/commands/top.py        |    1 +
 stgit/commands/unapplied.py  |    1 +
 stgit/commands/uncommit.py   |    1 +
 stgit/commands/unhide.py     |    1 +
 stgit/config.py              |   56 ++-----
 stgit/git.py                 |  331 +++++++++++++++++-------------------------
 stgit/gitmergeonefile.py     |   21 +--
 stgit/main.py                |    2 +-
 stgit/out.py                 |  100 +++++++++++++
 stgit/run.py                 |  141 ++++++++++++++++++
 stgit/stack.py               |    1 +
 stgit/utils.py               |   81 +----------
 37 files changed, 436 insertions(+), 347 deletions(-)
 create mode 100644 stgit/out.py
 create mode 100644 stgit/run.py