unusedcode exclude file: symbols known to be required

The file unused.easy contains a lot of symbols which are known
to be required, even they're currently not referenced by anyone.

Change-Id: I048c1656b240f7d601e4c99b8d9c4969b3954c87
Reviewed-on: https://gerrit.libreoffice.org/1084Reviewed-by: Andras Timar <atimar@suse.com>
Tested-by: Andras Timar <atimar@suse.com>

unusedcode.README

@@ -41,5 +41,7 @@ g) there's more actually unused code then what's listed. The idea is that what's
    code from the "release" binaries which only makes sense in debug/dbgutil
    configurations, and then tackle unused virtual method slots :-)
 
+Symbols that are known to be false alarms are listed in: unused.exclude
+
 [1] http://www.skynet.ie/~caolan/Packages/callcatcher.html
 [2] https://bugs.freedesktop.org/show_bug.cgi?id=38832

unusedcode.exclude

+#
+# list of symbols that should not be dropped, even they're not
+# referenced in current (linux) builds
+#
+
+# test functions that aren't used yet, but will be in near future
+# https://gerrit.libreoffice.org/#/c/1077/
+
+ScFiltersTest::testColorScaleODS()
+ScFiltersTest::testColorScaleXLSX()
+apitest::XCellRangesQuery::testQueryFormulaCells()
+apitest::XDataPilotDescriptor::testGetHiddenFields()
+apitest::XDataPilotFieldGrouping::testCreateDateGroup()
+apitest::XCellRangesQuery::testQueryFormulaCells()
+apitest::XElementAccess::testGetElementType()
+apitest::XElementAccess::testHasElements()
+apitest::XIndexAccess::XIndexAccess(int)
+apitest::XIndexAccess::testGetByIndex()
+apitest::XIndexAccess::testGetByIndexException()
+apitest::XIndexAccess::testGetCount()
+apitest::XNameReplace::testReplaceByName()
+apitest::XPropertySet::testAddPropertyChangeListener()
+apitest::XPropertySet::testAddVetoableChangeListener()
+apitest::XPropertySet::testRemovePropertyChangeListener()
+apitest::XPropertySet::testRemoveVetoableChangeListener()
+apitest::XSpreadsheetDocument::testGetSheets()