Fixed a parsing HEAD problem, when ansible is checked out as a submodule

Use `get_bin_path` properly for supervisorctl module

Keep result pristine for ignore_errors

Fixed a parsing HEAD problem, when ansible is checked out as a
submodule in git

Allow ~ expansion in chdir argument of command module

This allows the use of ~ in the chdir argument of the command module
I know the later change is absolutely necessary as the first change
was not sufficient. It may be that the first change fixes shell and
the second fixes command.

Subversion dest should allow ~ expansion

Used os.path.expanduser on dest to allow e.g. ~/svn/repo as
a destination

Jinja2 filter from_json added, to_json renamed

Conflicts:
	library/supervisorctl

Improve apt_repository and supervisorctl

Add seboolean module

add selinux module