* NEWS: Document changes.
	* java/lang/Class.java (newInstance(), getClassLoader(),
	forName(String), forName(String, boolean, ClassLoader)):
	Use new VMStackWalker methods.
	* java/lang/ClassLoader.java (getParent(), getSystemClassLoader()):
	Likewise.
	* java/lang/Package.java (getPackages()): Likewise.
	* java/lang/SecurityManager.java (getClassContext()): Likewise.
	* java/util/ResourceBundle.java (getBundle()): Likewise.
	* java/lang/Runtime.java (load(), loadLibrary()): Load the native
	library using the calling class' class loader.
	* java/lang/System.java (load(), loadLibrary()): Likewise.
	(currentClassLoader()): implement via currentLoadedClass().
	* vm/reference/gnu/classpath/VMStackWalker.java: New class.
	* vm/reference/java/lang/VMRuntime.java (nativeLoad()):
	Add a ClassLoader parameter.
	* vm/reference/java/lang/VMSecurityManager.java: Removed.

	* java/lang/Class.java (newInstance(), getClassLoader(),
	forName(String), forName(String, boolean, ClassLoader)):
	Use new VMStackWalker methods.
	* java/lang/ClassLoader.java (getParent(), getSystemClassLoader()):
	Likewise.
	* java/lang/Package.java (getPackages()): Likewise.
	* java/lang/SecurityManager.java (getClassContext()): Likewise.
	* java/util/ResourceBundle.java (getBundle()): Likewise.
	* java/lang/Runtime.java (load(), loadLibrary()): Load the native
	library using the calling class' class loader.
	* java/lang/System.java (load(), loadLibrary()): Likewise.
	(currentClassLoader()): implement via currentLoadedClass().
	* vm/reference/gnu/classpath/VMStackWalker.java: New class.
	* vm/reference/java/lang/VMRuntime.java (nativeLoad()):
	Add a ClassLoader parameter.
	* vm/reference/java/lang/VMSecurityManager.java: Removed.

	* java/lang/RuntimePermission.java: Improve Javadoc.
	* java/lang/SecurityManager.java: Improve Javadoc and formatting.
	* java/lang/System.java (setIn, setOut, setErr): Add required
	security check.
	(defaultProperties): Add a default, to allow clean resetting of
	properties back to the VM startup state.
	(setProperties): Correctly reset properties to default state.
	* native/jni/java-lang/java_lang_System.c: Update method
	signatures for changing I/O.
	* include/java_lang_System.h: Ditto.
	* vm/reference/java/lang/Runtime.java: Add shutdown hook
	capability, as well as updating the exec calls.
	* vm/reference/java/lang/VMSecurityManager.java: Improve Javadoc.
	* java/util/PropertyPermission.java: Fix implication bugs.
	* java/util/PropertyPermissionCollection.java: Ditto.

	* java/lang/Makefile.am (EXTRA_DIST): Add AssertionError.java and
	StackTraceElement.java.
	* java/lang/AssertionError.java: New file.
	* java/lang/ClassLoader.java: Add some synchronization and code
	cleanups to use improved VMClassLoader.
	Add assertion status fields and methods.
	* java/lang/StackTraceElement.java: New file.
	* vm/reference/java/lang/Class.java (desiredAssertionStatus): Add.
	Other locations: clean up code.
	* vm/reference/java/lang/Throwable.java (cause, stackTrace): Add
	exception chaining, and Java code for stack traces (native code
	unimplemented).
	* vm/reference/java/lang/VMClassLoader.java: Add (unimplemented)
	hooks to compile assertion status.
	(defineClass, loadClass): Add prototypes for missing native hooks.
	* vm/reference/java/lang/VMSecurityManager.java: Formatting.
	* gnu/java/lang/ClassHelper.java (getAllMethodsAtDeclaration),
	(getAllFieldsAtDeclaration): Delete, as they were just duplicates.
	(getAllMethods, getAllFields): Optimize.
	* gnu/java/lang/ArrayHelper.java: Formatting and Javadoc.
	(equalsArray): Delete, it duplicates java.util.Arrays.equals.
	* gnu/java/beans/BeanInfoEmbryo.java (hasMethod): Use
	Arrays.equals instead of ArrayHelper.equalsArray.

Fixed a few typos too.