hg: ppc-aix-port/jdk7u/jdk: Enable awt to build on AIX

[luchsh at linux.vnet.ibm.com]

Changeset: 478a5641010f
Author:    luchsh <luchsh at linux.vnet.ibm.com>
Date:      2012-08-13 18:33 +0800
URL:       http://hg.openjdk.java.net/ppc-aix-port/jdk7u/jdk/rev/478a5641010f

Enable awt to build on AIX
- Makefile changes to include AIX platform for building libawt.
- Link xawt/mawt and awt libraries to libjawt.
- AIX does not support Dl_info and dladdr, use sun.boot.library.path property to simulate that.
- Include unistd.h on AIX since no sys/unistd.h

! make/sun/awt/Makefile
! make/sun/jawt/Makefile
! src/solaris/native/sun/awt/awt_LoadLibrary.c
! src/solaris/native/sun/awt/splashscreen/splashscreen_config.h