* custom/arm_bare_bsp.cfg, custom/armulator.cfg, custom/csb336.cfg,
custom/csb337.cfg, custom/edb7312.cfg, custom/jmr3904.cfg,
custom/pc486.cfg, custom/pc586.cfg, custom/pc686.cfg,
custom/pck6.cfg, custom/vegaplus.cfg: Correct use of arguments for
gcc 4.x. Hopefully they are still OK for gcc 3.3.5.