Made changes so test_ahgo.go will build from ahgo/

also used go fit to reformat.
Checking in build script, which now runs from ahgo/
test_ahgo.go is running, but all output is not correct.
For example, Fuseki3.sgf is not written entirely.
(file limit, or move limit may be corrupting)
"all tests" no longer works...
changed directory from ahgo to test-ahgo

made changes to where test output is stored