8306914: Implement JEP 458: Launch Multi-File Source-Code Programs

Reviewed-by: jlahoda, jlaskey

src/java.base/share/classes/module-info.java

@@ -228,6 +228,7 @@ module java.base {
         java.instrument,
         java.management.rmi,
         jdk.jartool,
+        jdk.compiler,
         jdk.jfr,
         jdk.jlink,
         jdk.jpackage;

src/java.base/share/classes/sun/launcher/resources/launcher.properties

@@ -32,7 +32,7 @@ java.launcher.opt.header  =   Usage: {0} [options] <mainclass> [args...]\n\
 \       {0} [options] --module <module>[/<mainclass>] [args...]\n\
 \           (to execute the main class in a module)\n\
 \   or  {0} [options] <sourcefile> [args]\n\
-\           (to execute a single source-file program)\n\n\
+\           (to execute a source-file program)\n\n\
 \ Arguments following the main class, source file, -jar <jarfile>,\n\
 \ -m or --module <module>/<mainclass> are passed as the arguments to\n\
 \ main class.\n\n\