Remove support for DJGPP v1.x (bug#5813).

 src/:
 w16select.c (__dpmi_int): Remove DJGPP v1.x compatibility.
 s/msdos.h: 
 unexec.c (make_hdr, copy_text_and_data): 
 sysdep.c (wait_for_termination, sys_subshell): 
 msdos.c (dos_set_window_size, msdos_set_cursor_shape)
 (IT_set_terminal_modes): 
 (__write, _rename, gethostname, gettimeofday, alarm, fork, kill)
 (dos_ttraw, dos_ttcooked, run_msdos_command, abort): Remove DJGPP
 v1.x code and tests of the value of __DJGPP__.
 (nice, pause, sigsetmask, sigblock): Remove DJGPP v1.x
 compatibility code.
 lread.c: 
 gmalloc.c (memalign): 
 fileio.c (Fcopy_file, check_executable, Ffile_modes): 
 emacs.c (main): 
 dosfns.c (init_dosfns): 
 dired.c (file_name_completion_stat): Remove tests of __DJGPP__.

 msdos/:
 sed3.inp:
 sed2.inp:
 sed1.inp:
 mainmake: Files removed.

1 files changed, 0 insertions, 3 deletions

diff --git a/src/lread.c b/src/lread.c
index ba9d5378104..90edca90a16 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -41,9 +41,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "blockinput.h"
 
 #ifdef MSDOS
-#if __DJGPP__ < 2
-#include <unistd.h>     /* to get X_OK */
-#endif
 #include "msdos.h"
 #endif