regen
Expand bootstrapping instructions based on suggestions from Arthur Maciel:
 - mention unprivileged mode;
 - mention default settings for privileged and unprivileged modes;
 - mention how to get help from bootstrap script;
 - mention possibility of having multiple deployments.
regen
Update to 4.9.5

No changelog is provided.
Updated devel/nspr to 4.9.5
Update to 3.14.3

Changelog:
* Bugfixes
* Fix CVE-2013-1620.
Updated devel/nss to 3.14.3