The goal is to prevent a name collision with the expected mount/umount
function signatures, if we decide one day to allow any application
using those to work on MINIX.
At this moment the caller has to start the required services, but if we
implement that logic inside the mount/unmout function, this would allow
any application to call those function successfully.
By renaming those now, we prevent a possible ABI break in the future.
Change-Id: Iaf6a9472bca0dda6bfe634bdb6029b3aa2e1ea3b
78cfc9712b