Added ==smoke-test support and ciftest command.
Commands can now define a "==smoke-test" section in their CIF files, which defines a snippet of fshell script that will be run as part of "fshell smoketest" or by invoking ciftest directly. See the ciftest documentation for more details.
Added ==smoke-test sections to a few commands, the ones that were easy to test!
---------------------------- Test N1 ------------------------------
1:abc
2:def
---------------------------- Test N2 ------------------------------
1:abc
def
2:ghi
jkl---------------------------- Test N3 ------------------------------
2:def
3:
ghi
jkl---------------------------- Test N4 ------------------------------
2:ghi
jkl---------------------------- Test N5 ------------------------------
1:abc
2:def
3:ghi
4:jkl---------------------------- Test N6 ------------------------------
1:abc
2:def
3:ghi
4:jkl