RFR [XS] JDK-6462398: jni spec should specify which characters are unicode-escaped when mangling

[David Simms]

JDK-6462398 <https://bugs.openjdk.java.net/browse/JDK-6462398>: jni spec 
should specify which characters are unicode-escaped when mangling

Minor change to the JNI Specification 
<http://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/jniTOC.html>:

The section "Resolving Native Method Names 
<http://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/design.html#resolving_native_method_names>" 
should be slightly more specific in describing how characters are mangled.

Web review here: http://cr.openjdk.java.net/~dsimms/jnispec/6462398/ 
<http://cr.openjdk.java.net/%7Edsimms/jnispec/6462398/>

*Old Text*
	*New Text*
Unicode Character TranslationEscape Sequence 	Denotes
|_0XXXX| 	a Unicode character|XXXX|. Note that lower case is used to 
represent non-ASCII Unicode characters, for example,|_0abcd|as opposed 
to|_0ABCD|.


	
Unicode Character TranslationEscape Sequence 	Denotes
|_0xxxx| 	a Unicode character|xxxx|, representing characters other than 
ASCII alphanumeric ([A-Za-z0-9]). Note that lower case is used, for 
example,|_0abcd|as opposed to|_0ABCD|.