cleanup library headers
cleanup doc-strings
cleanup comments
magit-wip-save: use file's repository, not default-directory's

Use the `buffer-file-name' instead of `default-directory' to located
the repository containing the file being saved.  The user could have
changed the `default-directory'.  Also `expand-file-name' the
`buffer-file-name' (in addition to using it's `file-truename'.

Conflicts:
	magit-wip.el
magit-wip-save: do not attempt to save gitignored files

Previously an attempt was made but git-wip failed to save the change.

If there is a ignore rule that matches the file being saved but it is
actually being tracked or even just in the (real, not the tempory one
used for the wip branch) index then it *is* being saved successfully,
as before.

Conflicts:
	magit-wip.el
Merge branch 'maint'

Conflicts:
	magit-wip.el
Merge commit '9d1e3e209f62c0f7aaa1790b12320393722f042d' into tarsius/strings
include branch spec in delete confirmation message

Provide the user with slightly more confirmation that they're deleting
the branch they intended. This is useful particularly when cleaning up
stale branches via the Branch Manager.
Add '--date-order' option switch for 'magit-log'
remove dependency to epa

not worth breaking compatibility with emacs < 23 for just a face
Merge commit '5ea87cf'
Merge commit 'daf118f'
Merge remote-tracking branch 'refs/remotes/upstream/master'