Corrected format specifier for expectedSecondsFromGMT. Already did this in the week date tests, but I forgot to do it here.
Implemented flaky tests for flaky behavior: defaulting time-only strings to the current date.

This will probably be the first thing to be refactored: dateComponentsFromString:: should only return components found in the string. Filling in anything should be left to dateFromString::.
Added a test case for this test class's private escaping method, just to keep the code coverage numbers up.
Added tests to ensure strict parsing of variously sloppy dates returns nil. Both fail.
Strictness tests now pass.