illumos gate

As part of making this change, we'll need to update some of our guidance and documentation:

• https://wiki.illumos.org/display/illumos/How+To+Build+illumos - describes a requirement to install Studio to get lint, which won't be true with this change

Presumably this is intended to reflect a project level policy change; i.e., that we won't require lint-clean builds any longer. If we move ahead with that, we'll want to update some of the RTI documentation; e.g.,

• https://wiki.illumos.org/display/illumos/RTI+Advocacy - mentions checking that lint was run in mail_msg
• https://wiki.illumos.org/display/illumos/How+To+Contribute - suggests that lint must be run in the submitted mail_msg

Finally, if we are changing the policy here, what happened with the investigation into smatch to replace lint for the handful of checks we do still care about? As I recall, the most prominent check we want to retain through other means is:

• ignoring a return value without an explicit (void) cast

The smatch thread on the developer list is here: https://illumos.topicbox.com/groups/developer/T9a62d9da8534acdd-M0b91003b8e5da7cff718cd45

I have removed the aforementioned references to lint from the guides on the wiki.