review request (M): 7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one

[John Rose]

http://cr.openjdk.java.net/~jrose/7044892/webrev.00/

7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one

This is basically a bundle of point fixes having to do with corner cases.

Grouped under this bug:
 
7038847: MethodType.fromMethodDescriptorString accepts both "binary names"/"internal form of binary names"
7038860: MethodType.methodType(Class rtype, Class[] ptypes) doesn't throw NPE if ptypes is null
7042656: JSR292: invokeExact/Generic doesn't throw UnsupportedOperationException if invoked via Method.invoke
7042829: JSR292: MethodHandles$Lookup.findStatic[S|G]etter throws InternalError if SecurityManager is set
7041853: findGetter throws unexpected IllegalAccessException
-NOBUG-: asCollector throws ArrayIndexOutOfBoundsException instead of IllegalArgumentException for values outside [0..255]
-NOBUG-: asVarargsCollector gets wrong trailing parameter type
-NOBUG-: MethodType.unwrap on chokes on void if class Void occurs in the parameter list
-NOBUG-: MethodHandle.toString need to produce compliant output