Sharing of bits/fcntl.h on Linux (SPARC, x86)

[Roland McGrath]

> POSIX.1, 2001 edition specifies that the types are present.  Previous 
> editions of POSIX reserve the *_t suffix and so permit the types to be 
> defined, and in glibc we choose to make headers self-contained in that way 
> (defining all the types that the header is specified to use) when 
> permitted.

OK, so I think an appropriate comment is:

/* POSIX.1-2001 specifies that these types are defined by <fcntl.h>.
   Earlier POSIX standards permitted any type ending in `_t' to be defined
   by any POSIX header, so we don't conditionalize the definitions here.  */


Thanks,
Roland