Silence start_mock.bat command output

Change-Id: I52536d7029c23e2ab8ec4dad202da25574fb046a
Reviewed-on: http://review.couchbase.org/28005
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Allow environment for plugins on windows

Allow specifying the plugin via environment variables. This only works
for built-in plugins.

This should be replaced in the future with similar semantics for both
platforms

Change-Id: Ie8d3d27b5e14bacc8da87c6df185e55325cd6d34
Reviewed-on: http://review.couchbase.org/28006
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Don't warn about deprecated 'POSIX' names

Change-Id: I70d02c432ff34a57278c593c73ff4bc0108096cd