- place wmkdep and dirToString executables under
utilbin/$(WM_ARCH)$(WM_COMPILER).
This helps somewhat when copying rules about, and might help when creating
general rules.
- match comments to names of scripts
- remove comments about using C-shell (not true anymore)
- use 'assert' style syntax in places instead of if/then/fi
- wcleanMachine supports multiple arguments