change env.state to env.engine
bring op_add_sibling up to speed
change ScriptInput signature scheme
add/reorder some opcodes
remove LDFLAGS from fmt target
'rest' opcodes no longer move dptr
uncomment interpreter tests
update script opcodes
uncomment op_verify and TestVerify
change debug info
sign the whole ScriptInput
comment out broken code
increase testing coverage to include bootstrap compilations, more mutex refinement
add go cover tests to the makefile
Merge pull request #191 from lukechampine/reorg

restore scripting functionality
Merge branch 'master' into join
Add AddSibling functionality
change naming convetions - user never needs to input a dot
get synchronization working - but still not joining
fix script addresses