ticket:10809: Update SimpleDateFormat class doc examples for Sept and Tues, other table updates and note (C)

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36565 251d0590-4201-4cf1-90de-194747b24ca1
ticket:10809: Fix typo

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ticket:10814: Delete duplicated headerdoc comments in usearch.h

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ticket:10817: For UNUM_SPELLOUT/ORDINAL, document that unum_setTextAttribute with UNUM_DEFAULT_RULESET can specify ruleset

git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@36571 251d0590-4201-4cf1-90de-194747b24ca1
ticket:11055: Minor rewording that hopefully clarifies the usage of ucol_getFunctionalEquivalent

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