Added .hgignore, ignoring various files we don't need to see in hg st and hg diff output.
Added .hgignore, ignoring various files we don't need to see in hg st and hg diff output.

PersonifyInc/growl,PersonifyInc/growl,incbee/Growl,incbee/Growl,PersonifyInc/growl,PersonifyInc/growl,incbee/Growl,PersonifyInc/growl,incbee/Growl,incbee/Growl