<AWT Dev> [8] Review request for 8000626 Implement dead key detection for KeyEvent on Linux

[Alexander Scherbatiy]

bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8000626
webrev: http://cr.openjdk.java.net/~alexsch/8000626/webrev.00


- The Java Key code should keep modifiers for the dead key detection.
    For other keys the Shift modifier usually is cleaned.
- Only extended Java key code keep information about dead keys.
   Pass extended java key to postKeyEvent method as the key code argument.
- Assign unicode chars for the dead key symbols according to table:
     http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
   This is done to be compatible with Windows and Mac OS X where there 
are dead key chars in the key pressed and key released methods.
- The XKeysym.java file is generated from the UnicodeData.txt file and 
keysym2ucs.h .
   Some code that was only in the XKeysym.java file (like 
XKeySymConstants.XK_Shift_Lock) is moved to keysym2ucs.h so to not miss 
it after XKeysym.java regeneration.

Thanks,
Alexandr.