Add current java.home to detected installations

Author: mickaelistria

org.eclipse.jdt.launching/launching/org/eclipse/jdt/internal/launching/DetectVMInstallationsJob.java

@@ -159,6 +159,10 @@ private Collection<File> computeCandidateVMs(StandardVMType standardType) {
 			.collect(Collectors.toSet());
 
 		// particular VM installations
+		String current = System.getProperty("java.home"); //$NON-NLS-1$
+		if (current != null) {
+			directories.add(new File(current));
+		}
 		String javaHome = System.getenv("JAVA_HOME"); //$NON-NLS-1$
 		if (javaHome != null) {
 			directories.add(new File(javaHome));