tool: Moved --stderr to the global config

src/tool_cb_dbg.c

src/tool_cb_prg.c

src/tool_cfgable.c

src/tool_cfgable.h

src/tool_formparse.c

src/tool_getparam.c

src/tool_main.c

src/tool_metalink.c

src/tool_metalink.h

src/tool_msgs.c

src/tool_operate.c

src/tool_paramhlp.c