rebase: extract a variable for a repeated `repo[p1]`
I'll add another use site in the next patch.
Differential Revision: https://phab.mercurial-scm.org/D7896
#include <Python.h>
#if PY_MAJOR_VERSION >= 3
#define PYCODETYPE PyObject
#else
#define PYCODETYPE PyCodeObject
#endif
namespace contrib
{
void initpy(const char *cselfpath);
PyObject *pyglobals();
} /* namespace contrib */