Ditz issue update
Test 262 status update: remove some fixed issues
Merge branch 'test262-status-update'

Remove some known issues which have been fixed - namely related to Array
map() behavior for trailing non-existent elements (which was recently
changed).
Mark two failing API test cases with knownissue

This allows `make apitest` to finish with exit code 0, so that non-zero
exit codes can be used to indicate an error for commit testing.
Merge branch 'mark-apitest-known-issues'

Mark two failing API testcases with a "knownissue" marker so that
"make apitest" produces a clean result (zero exit code).
Ditz issue update