Algorithm to compute triple short cycles. This includes the ESSSR and envelope rings.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Including additional tests for norborane and correcting spelling of naphthalene.

Conflicts:
	src/test/org/openscience/cdk/graph/InitialCyclesTest.java

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Additional tests didn't take into account the closed walk - last/first vertex the same.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>
Correct test class annotation and remove print to standard out.

Signed-off-by: Egon Willighagen <egonw@users.sourceforge.net>