* gdb.base/fileio.exp: Update copyright year. On GNU/Linux, for
"Renaming a directory to a non-empty directory returns ENOTEMPTY
or EEXIST", treat EBUSY as an XFAIL.
* gdb.base/fileio.c: Include <errno.h>, and <sys/wait.h>. Gag
-Wformat errors. Add lost line. Use WEXITSTATUS to get system
exit status.
* gdb.base/fileio.exp: Disable target when nointerrupts and
noinferiorio, instead of limiting it to remote. Use remote_exec
instead of system.
