richedit: Added test for auto scroll behaviour with redraw disabled.

[Dylan Smith]

Wine currently doesn't auto scroll when redraw is disabled, even though
this is done in Windows.

This is a testcase for Bug 2057.
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 dlls/riched20/tests/editor.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)
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