redo the patch that add the < 0 test.  Since it isn't technically an error, there won't be an error message set by php.  So I've made it it's own separate case and added whcih socket is having the problem to some of the other error messages as well.
Merge branch 'master' of github.com:ZoneMinder/ZoneMinder
Merge branch 'master' of github.com:ZoneMinder/ZoneMinder
Merge branch 'master' of github.com:ZoneMinder/ZoneMinder
merge Debian build instructions, copy and modify for ubuntu