java dir for powepc64 and powepc64le can differ

E.g., RHEL >= 7.1 uses ppc64le for reasons listed in
https://bugs.openjdk.java.net/browse/JDK-8073139 .

This is a follow-up to commit 7a66dbe982.

Change-Id: I685f76d51e9775788a7fb225c6a5e2309a45ceb7

config_host/config_java.h.in

@@ -0,0 +1,6 @@
+#ifndef CONFIG_JAVA_H
+#define CONFIG_JAVA_H
+
+#undef JAVA_ARCH
+
+#endif

configure.ac

@@ -7002,6 +7002,7 @@ then
             ;;
         powerpc64le)
             AS_IF([test -d "$JAVA_HOME/jre/lib/ppc64le"], [my_java_arch=ppc64le], [my_java_arch=ppc64])
+            JAVA_ARCH=$my_java_arch
             ;;
         x86_64)
             my_java_arch=amd64
@@ -7011,6 +7012,7 @@ then
             ;;
         esac
         JAWTLIB="-L$JAVA_HOME/jre/lib/$my_java_arch -ljawt"
+        AS_IF([test "$JAVA_ARCH" != ""], [AC_DEFINE_UNQUOTED([JAVA_ARCH], ["$JAVA_ARCH"])])
     fi
     AC_MSG_RESULT([$JAWTLIB])
 fi
@@ -12988,6 +12990,7 @@ AC_CONFIG_HEADERS([config_host/config_folders.h])
 AC_CONFIG_HEADERS([config_host/config_gcc.h])
 AC_CONFIG_HEADERS([config_host/config_global.h])
 AC_CONFIG_HEADERS([config_host/config_graphite.h])
+AC_CONFIG_HEADERS([config_host/config_java.h])
 AC_CONFIG_HEADERS([config_host/config_lgpl.h])
 AC_CONFIG_HEADERS([config_host/config_liblangtag.h])
 AC_CONFIG_HEADERS([config_host/config_locales.h])

jvmfwk/inc/vendorbase.hxx

@@ -20,6 +20,8 @@
 #ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_VENDORBASE_HXX
 #define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_VENDORBASE_HXX
 
+#include "config_java.h"
+
 #include "rtl/ustring.hxx"
 #include "rtl/ref.hxx"
 #include "osl/endian.h"
@@ -31,7 +33,9 @@ namespace jfw_plugin
 
 
 //Used by subclasses of VendorBase to build paths to Java runtime
-#if defined(__sparcv9)
+#if defined(JAVA_ARCH)
+#define JFW_PLUGIN_ARCH JAVA_ARCH
+#elif defined(__sparcv9)
 #define JFW_PLUGIN_ARCH "sparcv9"
 #elif defined SPARC
 #define JFW_PLUGIN_ARCH "sparc"