jhvm: label, goto, if-goto; passes ProgramFlow/{BasicLoop, Fibonacci}
jhvm: function define
jhvm: return passes FunctionCalls/SimpleFunction
jhvm: sip: start of call
jhvm: init routine, proper return label
jhvm: wip label function start
jhvm: wip label function prefix
jhvm: working label prefixes
jhvm: fix function numering
jhvm: call: correct stack pointer on preamble
jvhm: working return
cleanup gitignores and import chapter 7/8 tests properly
New Test for Chapter 8: Function call/return and Sys.init initialization test
jhvm: unique return labels. Passes FunctionCalls/FibonacciElement
jhvm: passes FunctionCalls/StaticsTest
Complete Chapter 8
Complete Chapter 9