[e4-dev] 4.2 commits missing from 3.8

[e4Build@xxxxxxxxxxx]

Cherry-pick: origin/master commits missing from origin/R3_development

Fixed copyrfight date::bcbe284c750883699fd4be13f973ae846d42a079::bundles/org.eclipse.ui.ide
Fix for Bug 339130 - Unable to save perspective::80942baad79d11120f604a6a3c179513d8effc30::bundles/org.eclipse.ui.ide
Bug 351841 - Some of our examples now have errors because of deprecated elements Change to warning::ddcc3d5c1db792bf042a5836b19897821438d950::examples/org.eclipse.ui.examples.contributions
Bug 351841 - Some of our examples now have errors because of deprecated elements Change to warning::ddcc3d5c1db792bf042a5836b19897821438d950::examples/org.eclipse.ui.examples.fieldassist
Bug 351851 - [Compatibility] we need to fix up 122 errors in our org.eclipse.ui.tests bundle::412bb792f91ba461ddb4451860a72ff58cf8a279::tests/org.eclipse.ui.tests.harness
Bug 356605 - Performance tests have compile errors in 4.x stream::4c13dcddf2f21bd192123da6bfd65e4e2c55ddb7::tests/org.eclipse.ui.tests.performance
Bug 304940 [Progress] remove deprecated IProgressConstants.COMMAND_PROPERTY::051546cdf1b3036c571ac308b56010fcdf0be177::bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/progress
Fix for Bug 305395 - Need IProgressConstants2 moved into the compatibility workbench::010297242f44aa7c7893ce18ef24db1384d7f714::bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/progress
 Bug 296599 -  Add ability to run e4 based tests using PDE's JUnit Plug-in Test (initial commit of compatibility version of org.eclipse.ui.workbench)::ab04ce036bc7e17ebb804778f7b5514655820671::bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/progress
Clean-up warnings::da163032c4ae6b7c4b71362f1a94cee18649a887::bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/activities
Bug 355497 [Compatibility] Activities/Capabilities in Eclipse4::f7653986b00e3bda6aa50774168d84c613bd276a::bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/activities