Add implicit dependencies from the target

Currently if one defines implicit dependencies in the target these only
getting added to the launch but not the project, this makes these quite
hard to use. The best would be to make this feature more flexible to let
the user choose if it is a runtime requirement or a compile dependency.

Unless we have this, it seems the best way is to add it in both cases as
indicated in the help:

> The Implicit Dependencies section is used to manage the implicit
> dependencies of the target. Any plug-in marked as an implicit
> dependency will always be added as a required plug-in when PDE
> determines requirements.

Author: laeubi

ui/org.eclipse.pde.core/src/org/eclipse/pde/internal/core/RequiredPluginsClasspathContainer.java

@@ -58,6 +58,7 @@
 import org.eclipse.pde.core.build.IBuildEntry;
 import org.eclipse.pde.core.plugin.IPluginModelBase;
 import org.eclipse.pde.core.plugin.PluginRegistry;
+import org.eclipse.pde.core.target.NameVersionDescriptor;
 import org.eclipse.pde.internal.build.BundleHelper;
 import org.eclipse.pde.internal.build.IBuildPropertiesConstants;
 import org.eclipse.pde.internal.core.bnd.BndProjectManager;
@@ -275,6 +276,7 @@ private List<IClasspathEntry> computePluginEntriesByModel() {
 			}
 
 			addJunit5RuntimeDependencies(added, entries);
+			addImplicitDependencies(desc, added, entries);
 
 		} catch (CoreException e) {
 		}
@@ -641,6 +643,16 @@ private void addSecondaryDependencies(BundleDescription desc, Set<BundleDescript
 		}
 	}
 
+	private void addImplicitDependencies(BundleDescription desc, Set<BundleDescription> added,
+			List<IClasspathEntry> entries) throws CoreException {
+		for (NameVersionDescriptor entry : DependencyManager.getImplicitDependencies()) {
+			String id = entry.getId();
+			if (id != null) {
+				addExtraModel(desc, added, entries, id);
+			}
+		}
+	}
+
 	private void addExtraModel(BundleDescription desc, Set<BundleDescription> added, List<IClasspathEntry> entries,
 			String pluginId) throws CoreException {
 		IPluginModelBase model = PluginRegistry.findModel(pluginId);