configure.in: Remove fcntl.h check; never define _POSIX_SOURCE, NO_FCNTL or OPEN_DECL.

configure.in: Remove fcntl.h check; never define _POSIX_SOURCE, NO_FCNTL or OPEN_DECL.

	* libI77/configure.in: Remove fcntl.h check; never define
	_POSIX_SOURCE, NO_FCNTL or OPEN_DECL.  Add check for tmpnam().
	* libI77/configure: Rebuilt.
	* libI77/config.h.in: Rebuilt.
	* libI77/Makefile.in: Remove all traces of rawio.h from
	dependencies lists.
	* libI77/fio.h (FSEEK): Unroll -j1.7 -j1.6 made 2002-01-04.
	* libI77/open.c (f_open): Use HAVE_TMPNAM.
	* libI77/rawio.h: Remove file.

From-SVN: r48875