8210429: Clean up JNI_ENV_ARG for vmTestbase/jvmti/Get[G-Z] tests
Summary: Remove the JNI_ENV_ARG for the rest of the Get[G-Z]
Reviewed-by: dholmes, sspitsyn, cjplummer
8210495: compiler crashes because of illegal signature in otherwise legal code
Summary: Disable strict verification of compiler signatures when they do not affect generated bytecode
Reviewed-by: vromero