Remove downloading, guessing the host executable, the calls to
gdb_file_cmd and gdb_target_cmd, and "load" support.
(infer_host_exec): New function broken out from gdb_load.
(gdb_load): New wrapper for gdbserver_gdb_load.
* lib/mi-support.exp (mi_gdb_target_cmd): New function, based on
gdb_target_cmd. Use -target-select.
(mi_gdb_file_cmd): New function, broken out from mi_gdb_load.
Download binaries to the host. Clear last_mi_remote_file when
we load a new binary.
(mi_gdb_load): Call mi_gdb_file_cmd. If gdbserver.exp is loaded,
call gdbserver_gdb_load and mi_gdb_target_cmd.
* config/gdbserver.exp (gdb_load): Don't use TCL varargs.
Improve support for reusing an exec file. Copy exec file
to target, and run gdbserver on the target instead of on the host.
* config/gdbserver.exp (gdb_load): Handle the case
in which the arguments to gdbserver are given in the
baseboard configuration file.
Also handle the case in which the server needs to do a
load.
* config/gdbserver.exp: Rewritten from the ground up, to make it
compatible with the current dejagnu tree, and to make it work with
the new "gdbserver" in libremote.
