Update jdt.core to I20181031-1800 for 4.10M2
diff --git a/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties b/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties
index 7d00a51..305dbb8 100644
--- a/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties
+++ b/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/util/messages.properties
@@ -188,6 +188,7 @@
classpath_invalidExternalAnnotationPath = Invalid external annotation path: ''{0}'' in project ''{1}'', for classpath entry ''{2}''
classpath_testSourceRequiresSeparateOutputFolder=Test source folder ''{0}'' in project ''{1}'' must have a separate output folder
classpath_testOutputFolderMustBeSeparateFromMainOutputFolders=Test source folder ''{0}'' in project ''{1}'' must have an output folder that is not also used for main sources
+classpath_main_only_project_depends_on_test_only_project=Project has only main sources but depends on project ''{0}'' which has only test sources.
### miscellaneous
buffer_closed=Buffer is closed