Tracked down why the jvm/natives.scala fails for me and apparently

not anyone else.  Rebuilt libnatives.jnlib to accomodate x86-64,
and it seems to pass.  No review.

git-svn-id: http://lampsvn.epfl.ch/svn-repos/scala/scala/trunk@22168 5e8d7ff9-d8ef-0310-90f0-a4852d11357a

Author: extempore

test/files/jvm/libnatives.jnilib

@@ -37,7 +37,7 @@ JAVAH_OPTIONS="-jni -force -classpath ${CLASS_DIR} -o ${OBJ_NAME}.h"
 CC=gcc
 
 if $darwin; then
-  CC_OPTIONS="-c -arch ppc -arch i386"
+  CC_OPTIONS="-c -arch ppc -arch i386 -arch x86_64"
   CC_INCLUDES="-I/System/Library/Frameworks/JavaVM.framework/Headers"
   LNK_OPTIONS="-dynamiclib -framework JavaVM"
   FULL_LIB_NAME=${LIB_NAME}.jnilib