Make missing command line arguments fail properly Actually make lwasm, lwlink, and lwar exit with a nonzero status if command line argument parsing fails due to missing arguments. This required adjustments to lw_cmdline to return error codes in those cases.

\.exe$
\.o$
\.d$
\.a$
~$
\.orig$
/lwbasic$
/lwlink$
/lwobjdump$
/lwar$
/lwasm$
/lwcc/lwcc$
/lwcc/lwcpp$

# for windows
\.suo$
\.sdf$
\.opensdf$
\Debug$
\Release$