8058936: hotspot/test/Makefile should use jtreg script from $JT_HOME/bin/jreg...

8058936: hotspot/test/Makefile should use jtreg script from $JT_HOME/bin/jreg (instead of $JT_HOME/win32/bin/jtreg)
Reviewed-by: dholmes, stefank

test/Makefile

@@ -180,8 +180,8 @@ ifdef TESTDIRS
   JTREG_TESTDIRS = $(TESTDIRS)
 endif
 
-# Default JTREG to run (win32 script works for everybody)
-JTREG = $(JT_HOME)/win32/bin/jtreg
+# Default JTREG to run
+JTREG = $(JT_HOME)/bin/jtreg
 
 # Option to tell jtreg to not run tests marked with "ignore"
 ifeq ($(PLATFORM), windows)