UIMACPP Pythonnator fails to build with Python 2.6

As reported by Jens Grivolla
In order to compile with Python 2.6 we need to touch uima_wrap.cxx once it is generated. Otherwise we get the following error:

uima_wrap.cxx: In function ‘bool PyStringConvert(PyObject*, icu_3_6::UnicodeString&)’:
uima_wrap.cxx:2844: error: cannot convert ‘int*’ to ‘Py_ssize_t*’ for argument ‘3’ to ‘int PyString_AsStringAndSize(PyObject*, char*, Py_ssize_t)’

We needed to change "int len" to "Py_ssize_t len" in that function (it would probably work without the change on 32bit systems). Since uima_wrap.cxx gets generated automatically, we'd need to actually track down the original source of this error.