8154470: defines.h confused about PROGNAME and JAVA_ARGS
Summary: Fiddle with const_progname initializations
Reviewed-by: ksrini, alanb

7127906: (launcher) convert the launcher regression tests to java
Reviewed-by: darcy, naoto

7132270: tools/launcher/DefaultLocaleTestRun.java failing (win)
Reviewed-by: alanb, chegar

7124443: (launcher) test DefaultsLocaleTest fails with Windows shells.
Reviewed-by: darcy