Allow missing appauthor to fall back to appname.
Issue #11: Allow optional appname for root dir.
Add default value to 'appauthor' on wrapper.
Respect XDG: user data is in ~/.local/share for (fixes issue #16)

Bump version to 1.3.0
stop messing with appname's case, Linux is case sensitive
correct the Unix comment for user_data_dir, too
Merge remote-tracking branch 'origin/appauthor-fallback'
Merge remote-tracking branch 'origin/wrapper-defaults'
Merge remote-tracking branch 'origin/root-directories'

Conflicts:
	lib/appdirs.py
respect the meaning of XDG_DATA_DIRS in site_data_dir
do without extra variable in pathlist processing
Sync README.rst description with latest fixes
Update CHANGES.rst to match *nix-specific changes
add returnlist to wrapper, too
linux-fixes: add *_config_dir
add myself as a copyright holder
the newly added *_config_dir fixes #6
Update README.rst to mention *_config_dir APIs
renamed 'returnlist' to 'multipath'
Merge branch 'activestate' into next

Conflicts:
	appdirs.py