Replace use of wrappedJSObject to defer password lookup on LoginInfo instances with a Proxy instance

https://code.google.com/p/mozilla-keychain/issues/detail?id=65
update CHANGES
make sure we're not logging passwords!!
Update version number and compatibility
left some logging code behind that causes an error
fix copy and paste error in logging output
Added tag release-1.1.7 for changeset 786de1bce2d5
fix version numbers (AMO doesn't currently like 29.*)
Added tag release-1.1.7 for changeset 8c05f170902c
Make updates to support Gecko 32 (breaking support for earlier versions in the process, so updating compatibility information as well)
Added tag release-1.1.8 for changeset ac9946a3f9b0
Updated chrome overlay to work with new in-content preferences
Fixes Issue 67
correct typo in version number