RFR: JDK-8042213: Freetype detection fails on Solaris sparcv9 when using devkit

[Erik Joelsson]

Please review this small fix to freetype detection in configure. On 
Solaris, libs are typically found in the "isadir" for 64bit builds. This 
was only handled for amd64 for freetype. This patch makes it more universal.

Bug: https://bugs.openjdk.java.net/browse/JDK-8042213
Patch inline:
diff -r de3a6b2a6904 common/autoconf/libraries.m4
--- a/common/autoconf/libraries.m4
+++ b/common/autoconf/libraries.m4
@@ -286,9 +286,10 @@
            AC_MSG_NOTICE([Could not find 
$POTENTIAL_FREETYPE_LIB_PATH/freetype.lib. Ignoring location.])
            FOUND_FREETYPE=no
          fi
-      elif test "x$OPENJDK_TARGET_OS" = xsolaris && test 
"x$OPENJDK_TARGET_CPU" = xx86_64 && test -s 
"$POTENTIAL_FREETYPE_LIB_PATH/amd64/$FREETYPE_LIB_NAME"; then
-        # On solaris-x86_86, default is (normally) PATH/lib/amd64. 
Update our guess!
- POTENTIAL_FREETYPE_LIB_PATH="$POTENTIAL_FREETYPE_LIB_PATH/amd64"
+      elif test "x$OPENJDK_TARGET_OS" = xsolaris \
+          && test -s 
"$POTENTIAL_FREETYPE_LIB_PATH$OPENJDK_TARGET_CPU_ISADIR/$FREETYPE_LIB_NAME"; 
then
+        # Found lib in isa dir, use that instead.
+ 
POTENTIAL_FREETYPE_LIB_PATH="$POTENTIAL_FREETYPE_LIB_PATH$OPENJDK_TARGET_CPU_ISADIR"
        fi
      fi
    fi

/Erik