[OpenJDK 2D-Dev] RFR: 8144015: [PIT] failures of text layout font tests

[Phil Race]

Webrev: http://cr.openjdk.java.net/~prr/8144015/

This RFR encompasses changes that are sufficiently related
to keep them all together and they deserve testing as a whole.
Multiple test failures are resolved. A list is below.

Notable highlights
ExtendedTextSourceLabel.createCharinfo() can now handle
cases where the glyph count is less than the char count.
This was not just a problem in 9 (harfbuzz) but has been
observed on 8 too (8041480 in the list below).
The fundamental change is to abandon the idea of
updating in place which added complexity and was
never going to work if you had too few glyphs ..

HBShaper.c
- Fixed that kerning was always enabled
- Simplified - and corrected - the code that stored the resulting data
- Stopped using throwing an exception as a way to expand storage
- Cleaned up JNI usage

Tests have been added/updated/open sourced as necessary.

JPRT passed these changes.


Bugs fixed by this change :
https://bugs.openjdk.java.net/browse/JDK-8144015
8144015: [PIT] failures of text layout font tests

** https://bugs.openjdk.java.net/browse/JDK-8144023
8144023: [PIT] failure of text measurements in 
javax/swing/text/html/parser/Parser/6836089/bug6836089.java

** https://bugs.openjdk.java.net/browse/JDK-8145542
8145542: The case failed automatically and thrown 
java.lang.ArrayIndexOutOfBoundsException exception

** https://bugs.openjdk.java.net/browse/JDK-8151725
8151725: [macosx] ArrayIndexOOB exception when displaying Devanagari 
text in JEditorPane

** https://bugs.openjdk.java.net/browse/JDK-8144240
8144240: [macosx][PIT] AIOOB in 
closed/javax/swing/text/GlyphPainter2/6427244/bug6427244.java

https://bugs.openjdk.java.net/browse/JDK-8152680
8152680: Regression in GlyphVector.getGlyphCharIndex behaviour

** https://bugs.openjdk.java.net/browse/JDK-8158924
8158924: Incorrect i18n text document layout

** https://bugs.openjdk.java.net/browse/JDK-8041480
8041480: ArrayIndexOutOfBoundsException when JTable contains certain string

-phil.