krestovy ktor
remove user string
rename back to ktor
remove user string
kfile variable expansion
add printing of the commands
source files deduction
invocation tree/graph
job queue building
prototype builds something.
clean target work
add command line parsing
split out utility functions
target look-up, with defaults, seem to work
rework makefile
fix handling of . directory
start contrib for parallel builds
parallel build works! probably...
move file loading into a dedicated file
exec without shell