update jdt.core to I20190220-1800 for 2019-03 M3

- enrich jclMin1.8 with classes needed by OT/J
- configure more test projects for 1.8
- add 1.8 versions of JCL_LIB to some more test plugins
- accept jdt.annotation v2.0
- expect @role tag in tests
- revert part of commit 9981d84813a6706ae3f09010b2ce00ae51aa8c07
diff --git a/othersrc/JCLMin1.8/.classpath b/othersrc/JCLMin1.8/.classpath
new file mode 100644
index 0000000..51a8bba
--- /dev/null
+++ b/othersrc/JCLMin1.8/.classpath
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>