NewThreadExecutor::Run pushed a std::thread per connection and only ever joined them
in the destructor, so a server leaked a joinable thread object for every connection
it had ever served. Measured with 60 connect/disconnect cycles against the debugger:
handle count +60 before, +1 after. Each worker now flags itself done as its last act,
and Run() reaps the finished ones first. Only the accept thread calls Run(), so the
flag is the only thing that needs to be atomic.
Note this doesn't bound how many connections can be in flight at once - it just stops
the finished ones from piling up.
Separately, a received close code was echoed straight back. RFC 6455 7.4.1 reserves
1004, 1005, 1006 and 1015 for describing how a connection ended locally, so they must
never go on the wire - echoing one back would be our protocol violation rather than
the client's. Send PROTOCOL_ERROR when they give us something we can't repeat.
* Move and rename file_util/fd_util to Common/File/FileUtil and DirListing
Let's also move net while we're at it.
Move the ZIM/PNG loaders over to Common.
Move the UI framework into Common
iOS buildfix
* Buildfix
* Buildfixes
* Apple buildfix
* This typo again..
* UWP buildfix
* Fix build of PPSSPPQt, such as it is (it's not in good condition...)
* Guess what? Another buildfix.