Rollup merge of rust-lang#99194 - simlay:simlay/update-rust-gdbgui-gdb-args-to-gdb-cmd, r=Mark-Simulacrum

Fix gdb-cmd for rust-gdbgui

With cs01/gdbgui#198, the way that gdbgui arguments were specified changed. I've tested this with program generated from `cargo new --bin` and it worked as gdbgui should.

Closes rust-lang#76383.

Author: matthiaskrgr

src/etc/rust-gdbgui

@@ -58,7 +58,6 @@ GDB_ARGS="--directory=\"$GDB_PYTHON_MODULE_DIRECTORY\" -iex \"add-auto-load-safe
 # Finally we execute gdbgui.
 PYTHONPATH="$PYTHONPATH:$GDB_PYTHON_MODULE_DIRECTORY" \
   exec ${RUST_GDBGUI} \
-  --gdb ${RUST_GDB} \
-  --gdb-args "${GDB_ARGS}" \
+  --gdb-cmd "${RUST_GDB} ${GDB_ARGS}" \
   "${@}"