Fix ACC_MODE() for real

Fix ACC_MODE() for real

commit fcca17e9e958e5a12187c515519e30b69b3d33c7 had stepped on a rather
nasty mess: definitions of ACC_MODE used to be different.  Fixed the
resulting breakage, converting them to variant that takes O_... value;
all callers have that and it actually simplifies life (see tomoyo part
of changes).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>