fall back on system default encoding for decoding time strings if a locale-based encoding is not found (fixes #3879)
fall back on system default encoding for decoding time strings if a locale-based encoding is not found (fixes #3879)

git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@4715 af82e41b-90c4-0310-8c96-b1721e28e2e2

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