8181147: JNU_GetStringPlatformChars should have a fast path for UTF-8

Reviewed-by: martin, erikj, sherman, chegar, mikael

make/Main.gmk

@@ -843,7 +843,7 @@ else
   build-test-hotspot-jtreg-native: buildtools-jdk \
       hotspot-$(JVM_VARIANT_MAIN)-libs
 
-  build-test-jdk-jtreg-native: buildtools-jdk
+  build-test-jdk-jtreg-native: buildtools-jdk java.base-libs
 
   test-image-hotspot-jtreg-native: build-test-hotspot-jtreg-native
 

make/jprt.properties

@@ -174,7 +174,13 @@ jprt.build.targets=${my.jprt.testsetHasCustomBuildTargets ? \
 # Select test targets - jprt default for jprt.test.set is "default"
 jprt.test.targets=${my.test.targets.${jprt.test.set}}
 jprt.make.rule.test.targets=${my.make.rule.test.targets.${jprt.test.set}}
-jprt.test.bundle.targets=${my.jprt.test.bundle.targets.${jprt.test.set}}
+
+# Not all test targets need the test image
+jprt.test.bundle.targets=\
+  ${my.make.rule.test.targets.hotspot.reg}, \
+  ${my.make.rule.test.targets.hotspot.gtest} \
+  ${my.make.rule.test.targets.nativesanity} \
+  ${my.test.target.set:TESTNAME=jdk_lang}
 
 # 7155453: Work-around to prevent popups on OSX from blocking test completion
 # but the work-around is added to all platforms to be consistent
@@ -473,20 +479,11 @@ my.make.rule.test.targets.hotspot=                                      \
   ${my.make.rule.test.targets.hotspot.reg}                              \
   ${my.make.rule.test.targets.hotspot.other}
 
-# Install the test bundle for the testset hotspot jtreg tests
-# (but not for the other Makefile based tests)
-my.jprt.test.bundle.targets.hotspot= \
-  ${my.make.rule.test.targets.hotspot.reg}, \
-  ${my.make.rule.test.targets.hotspot.gtest}
-
 # Native jdk and hotspot test targets (testset=nativesanity)
 my.make.rule.test.targets.nativesanity=					\
     ${my.test.target.set:TESTNAME=jdk_native_sanity},			\
     ${my.test.target.set:TESTNAME=hotspot_native_sanity}
 
-# Install the test bundle for the nativesanity jtreg tests
-my.jprt.test.bundle.targets.nativesanity=${my.make.rule.test.targets.nativesanity}
-
 ################################################################################
 # Testset buildinfra
 my.build.flavors.buildinfra = \