Make builds parallel
Use MAKEFLAGS for parallel builds
Move mysql_plugin to server package as it controls the server plugins
Wrap-and-sort
Remove legacy 5.0->5.1 transition code that refers a internal-use-only -directory that does not even exist anymore.
Removed all unnecessary .dirs as most of the directories are generated automatically
Don't emit extra output at init invocation
Many users have complained that they're database is corrupt because
they tried to start the database and it refuses to do so, and at
the same time emitting a message with the word "corrupt". this is
just plain wrong and confusing, so I'm removing it.

Anyway init scripts should not emit any extra messages apart from
start OK / failed.
added systemd service profile and script