[syslinux] make spotless, make and dosutil

[Sebastian Herbszt]

checkout master:
dosutil/mdiskchk.com exists

make spotless:
dosutil/mdiskchk.com gets deleted

make:
make[1]: Entering directory `/syslinux-3.85-pre1-1-g769ee62/dosutil'
wcl -6 -osx -mt -bt=DOS -l=COM -c -fo=mdiskchk.obj mdiskchk.c
make[1]: wcl: Command not found

Time to revisit "Makefile: add DOS utilities as installables" ?

- Sebastian