Per https://github.com/astropy/astropy-helpers/issues/18 log git submodule-related actions as warnings to ensure they are output to sys.stderr by default.  Include an annoying workaround to ensure consistent behavior on Python 2.6.
Per https://github.com/astropy/astropy-helpers/issues/18 log git submodule-related actions as warnings to ensure they are output to sys.stderr by default.  Include an annoying workaround to ensure consistent behavior on Python 2.6.

embray/astropy_helpers,Cadair/astropy-helpers,bsipocz/astropy-helpers,embray/astropy_helpers,astropy/astropy-helpers,embray/astropy_helpers,bsipocz/astropy-helpers,embray/astropy_helpers,larrybradley/astropy-helpers,astropy/astropy-helpers,dpshelio/astropy-helpers,larrybradley/astropy-helpers,larrybradley/astropy-helpers,Cadair/astropy-helpers,bsipocz/astropy-helpers,dpshelio/astropy-helpers