Fix mailcount.sh return errorcode when count results in an error
Fix strange output when a following segment is empty (fixes #101)

When searching for the next segment to base background coloring on, it
skips empty segments now.
Fix bug introduced when fixing #101
Add earthquake information segment

This segment currently only looks at the 'goo' earthquake rss feed,
which takes it's information from the Japan Meteorological Agency.
This segment can be customized to display recent earthquakes that occur
in a given 'alert-window' above a certain magnitude threshhold. This
information should not and cannot be used as an early warning system,
but is helpful in alerting you to large quakes that may have happened
nearby.
Remove unneeded window flag.
Merge pull request #122 from scicalculator/add_earthquake

Add earthquake information segment
Merge remote-tracking branch 'scicalculator/fix_bug-101_empty-segment-bug'
Merge pull request #120 from scicalculator/fix_mailcount

Fix mailcount.sh return errorcode when count results in an error
Added earthquake info to README.
Fix earthquake file never being read
Add light drizzle to weather segment.
Merge pull request #123 from scicalculator/fix-earthquake-tmp-file

Fix earthquake file never being read
Don't stop processing if there is no LAN.
Merge pull request #124 from johnsyweb/no_lan

Don't stop processing if there is no LAN.
Add 'snow/windy' to weather segment
Stat same as shell_is_osx does.
Stat same as shell_is_osx does.
Use gnugrep for perl regexp support.
Adding note regarding FreeBSD.
Adding note regarding weather.sh in segment req.