plugins/router_cache: fix memory leak in uwsgi_router_cache_store

Reported by Coverity as CID #995792.
plugins/carbon: fix memory leak in carbon_post_init

Reported by Coverity as CID #995791
core/emperor: fix memory leak in uwsgi_emperor_vassal_start

Reported by Coverity as CID #995786.
plugins/cgi: fix memory leak in uwsgi_cgi_request

Reported by Coverity as CID #990186.
Merge pull request #209 from xrmx/coverity12

plugins/cgi: fix memory leak in uwsgi_cgi_request
fixed multiple interpreters support
Merge pull request #208 from xrmx/coverity11

More issues reported by Coverity
force the emperor to honour --max-fd
added --daemons-honour-stdin
added --honour-stdin
working on v8 multithreading
more solid multithreading support for v8
added mule support for v8
added commonjs 'require' implementation to v8
preliminary support for JSGI 3.0
completed JSGI response
first implementation of a JSGI request
more JSGI request vars
added the gridfs plugin
added routing support for gridfs