src/native/vm/VMVirtualMachine.c (suspendThread): print error message with printjvmti...

src/native/vm/VMVirtualMachine.c (suspendThread): print error message with printjvmtierror
	(resumeThread): idem
	(getAllLoadedClassCount): idem
	(getAllLoadedClasses): idem
	(getClassStatus): idem
	(getAllClassMethods): idem
	(getFrameCount): idem
	(getThreadStatus): idem
	(getSourceFile): idem
	(registerEvent): idem

src/native/vm/VMMethod.c (printjvmtierror): new helper function for getting and print error messages
	(getName): print error message with printjvmtierror, remove signature, generic signature
	(getSignature): print error message with printjvmtierror, remove name, generic signature
	(getModifiers): print error message with printjvmtierror
	(getlinetable): idem
	(fillVariableTable): new function for converting jvmtiLocalVariableEntry to arguments for gnu.classpath.jdwp.util.VariableTable constructor
	(getVariableTable): new implementation. tries to get local variable table and return gnu.classpath.jdwp.util.VariableTable.

src/native/include/Makefile.am: add VariableTable

src/native/jvmti/VMjdwp.c (printjvmtierror) new function (duplicate) - this is a work around
	(VMInit): print error message with printjvmtierror

src/native/jvmti/jvmti.c (InterruptThread): new implentation
	(GetThreadInfo): switch form using javastring_tochar (uses malloc) to javastring_toutf/utf_sprint_convert_to_latin1
	(GetOwnedMonitorInfo): fix error handling
	(GetFrameLocation): idem
	(DestroyRawMonitor): use heap_free
	(GetClassSignature): fix error handling
	(GetSourceFileName): use utf_bytes
	(GetFieldName): fix error handling
	(GetFieldDeclaringClass): add error handling
	(GetFieldModifiers): idem
	(GetMethodName): fix error handling
	(GetClassLoaderClasses): idem
	(GenerateEvents): add CHECK_CAPABILITY can_generate_compiled_method_load_events

src/native/jvmti/VMjdwp.h add printjvmtierror