xen build with python 3.3 fails with:

xenkernel45:
  File "/tmp/pkgsrc/sysutils/xenkernel45/work.x86_64/xen-4.5.0/xen/tools/compat-
build-source.py", line 30
    print line.rstrip()
            ^
SyntaxError: invalid syntax

xentools45:
  File "mkchecker.py", line 40, in <module>
    if compat_arches.has_key(a):
AttributeError: 'dict' object has no attribute 'has_key'
...

XXX Assume the same is true for python 3.4 and mark as not for 33 34

(prlw1)