rfs type defs violate type naming conventions

[Ralf Corsepius]

The rfs code applies this kind of typedefs

typedef struct xxxx_t {
...
} xxxx;

This violates the conventions POSIX and RTEMS apply on types' naming:

*_t is meant to be a typedef.

i.e. these typedefs are *all* reversed and should be renamed such that the *_t are the typedefs.

Proposal: drop the structs and use typedefs only, i.e.
typedef struct {
...
} xxx_t;

Alternatively
typedef struct xxxx_s {
...
} xxx_t;

I haven't checked it this also affects rtems-4.10, but marking this as a blocker bug for 4.10 until this has been verified.

[Chris Johns]

Committed changes to HEAD and 4.10.