delta/detailed.tests#t4 -- granularity cmdline option test

delta should by default lump formulae that have the same left-hand side
together into one formula. It should also do this when passed the "-g 1" or
"--granularity=1" command-line option. It should not perform extra work to lump
formulae if it is passed the "-g 0" or "--granularity=0" command-line option.

Note that as far as I (eefi) can tell as of July 12, 2005, the extra work to
lump formulae makes a difference only when the left-hand side is an empty
formula. In other instances, the way delta constructs patches automatically
lumps things that are related to the same left-hand side together.

issue originally raised in the following bug:
http://lists.w3.org/Archives/Public/public-cwm-bugs/2005Jun/0008

options passed to cwm:
delta/t4/test.n3 --think --with "`../delta.py -f delta/t4/from.n3 -t delta/t4/to.n3`" "`../delta.py -g 1 -f delta/t4/from.n3 -t delta/t4/to.n3`" "`../delta.py --granularity=1 -f delta/t4/from.n3 -t delta/t4/to.n3`" "`../delta.py -g 0 -f delta/t4/from.n3 -t delta/t4/to.n3`" "`../delta.py --granularity=0 -f delta/t4/from.n3 -t delta/t4/to.n3`"

reference output:
delta/t4/output.n3