Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.

Fix typo in the BSD copyright: s/withough/without/

Spotted and suggested by: des
MFC after: 3 weeks

Split joystick driver into ISA and PC Card front ends.

Similar code was submitted in PR 5559 by Takeshi OHASHI-san, but the
PC Card system has changed much since then, so this is a fresh
implementation.

PR: i386/5559
Submitted by: Takeshi OHASHI