watch position for changes when user says to use 'current' position
ensure provider constructed before notifying about changes; but do nothing on cancel
consistentize names; remove nonexistent nsIFakeListener reference
remove expired receipt option Issue #497
update watcher after timeout like nsGeolocation expects; excise cruft; update naming
correct name of nsGeolocationService in comment
Merge pull request #551 from nickdesaulniers/remove_expired

remove expired receipt option Issue #497
Merge pull request #544 from mykmelez/watch-geolocation
update B2G/Gaia to 2013-05-22 tips of b2g18/v1-train branches
Merge branch 'master' into update-b2g-gaia
Merge pull request #552 from mykmelez/update-b2g-gaia

update B2G/Gaia to 2013-05-22 tips of b2g18/v1-train branches
Request changes from jetpack 1.14 not master
Merge pull request #554 from bkase/bugfix-request-too-new