Add "--" to separate program args from lldb/gdb server args

Without this, "lldbclient.py -r ls --help" fails, because the lldb/gdb
server handles the "--help" argument rather than passing it through to
the program being started.

Test: lldbclient.py --lldb -r /system/bin/ls --help
Test: gdbclient.py --no-lldb -r /system/bin/ls --help
Change-Id: I76c7e73b535125ea96f5435bbfe99099786956c1
1 file changed