#i60307# search for strings in date formats fails.
When "Search in" is set to "Values", search the formatted values
instead of just the raw input. This fixes a 9 year old
bug that's been duplicated a

#i60307# search for strings in date formats fails.
When "Search in" is set to "Values", search the formatted values
instead of just the raw input. This fixes a 9 year old
bug that's been duplicated at least 6 times, and matches what Excel
does. Tests show even "Replace" works, and works well: if
"October" is replaced by "November", it converts the original
month from 10 to 11; it only converts the cell type to text if the
resulting text is no longer a valid date. Also added BVT tests
for the expected behaviour.

git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1712367 13f79535-47bb-0310-9956-ffa450edef68
(cherry picked from commit 2e4d2335e101b0658cddb9e31f2fd229d84bfc1d)

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