Define inline to __inline for MSVC
Define inline to __inline for MSVC

MSVC does not support the inline keyword in C mode.  Define it to
__inline as a workaround.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/ultragetopt,kevinoid/ultragetopt