Initial implementation of git pillar

This isn't a particuarly pretty implementation, but it does work.

There are a few "gotchas" with this implementation-- since the pillar builder uses the local fileclient you have to have some directory which has all of the files-- to work with this i've set it up so you have to specify a branch+repo combination.

Ideally we'd need to do some work on the fileclient to add a new class which is something like "gitremote" that can then manage all of the file getting/caching/etc.
add ability to pass defaults to included pillar sls
Correct CLI example. Fixes #5773.
Merge pull request #5774 from s0undt3ch/issues/5773

Correct CLI example. Fixes #5773.
Fix documentation
Merge pull request #5777 from bretep/develop

Fix documentation for network routes
Revert 439c736, 29798a8

This puts back the call to __gen_rtag(). Its removal was a
misunderstanding of how the rtag works. mod_init creates the file,
__gen_rtag() just returns the path to the file so that it can be checked
to see if the file exists.
Merge pull request #5781 from terminalmage/quickfix

Revert 439c736, 29798a8
Add manifest for salt-thin
Add requirements for salt-thin
Add thin setup.py
clean up docstring
add kmod.is_loaded to check if a kernel module is currently loaded.

this
  if salt['kmod.is_loaded']('aacraid')

now obsoletes my workaround:
  if salt['cmd.retcode']('lsmod |grep ^aacraid') == 0

in sls files
Merge pull request #5783 from pille/kmod-is_loaded

add kmod.is_loaded to check if a kernel module is currently loaded.
Fix traceback in sys.doc, sys.list_functions

This fixes #5779. In addition, it adds support for an arbitrary number
of positional arguments.
Merge pull request #5788 from terminalmage/issue5779

Fix traceback in sys.doc, sys.list_functions
Update network.py

Update data as required due to network interface changes. Thanks to help from @cgoudie.
Update AUTHORS

I contribute.
Merge pull request #5790 from jhutchins/patch-3

Update AUTHORS
Document the `env` arg for cmdmod functions, Fix #5772