More build system work: change DMCONFIG Make variable to DM_CONFIG, and add option of setting it to value "no" which disables inclusion of "config.mak". Setting DM_CONFIG to any other non-empty value will include file with that name instead. Empty value will include default "config.mak".

syntax: glob
ChangeLog
*~
*.orig
*.diff
*.o
*.a
*.mak
*.d
minijss/jmix_c.c
data/
exe/
fgcl/
njv/
ft/
DOSFED/