1.0.12dev: Fix test failure from r14816 on Windows
1.0.12dev: Fix test failure from r14816 on Windows

`parse_date` raised a `TracError` on Windows for a data with year 1899,
and the `from` data defaults to the current day.

Refs #12489.

git-svn-id: 50cd48c816abc7a9f40e8e03a4277466cb30a3e4@14819 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac