mark a few testcase failures as known issues (not to be fixed in 1.0)
mark a few testcase failures as known issues (not to be fixed in 1.0)
Allow testcase 'knownissue' to be a string
Update testcase doc knownissue prop
Add knownissue strings to failing testcases

Explain the current failures in short to provide a better picture of
what errors will most likely be left in the 1.0 release.
Update custom/nonstandard flagging of testcases
Merge branch 'testcase-knownissues'

Add 'knownissue' properties to currently failing test cases.  These tests
are probably left in a failing state in the 1.0 release so it's nice to
have a summary for them.  Also update a few custom/nonstandard tags in test
cases to match the convention of using 'nonstandard' when a real world
compatible behavior is tested for.