This solves the issue reported by Volker Braun where conflicting
using aliases of uint64_t would result in compile time errors.

Unfortunately, this also means that it's always included if
CYTHON_USE_PYLONG_INTERNALS is set, but it's a short header.

prevent non-const char* string literals from being interned

Now that we split CInitCode and CppInitCode, we no longer generate
valid C code even if C++ features are not used.

This is a bit of a hack, but as Cython doesn't yet understand
const overloads with different (usually const) return types,
it can't provide the right type of reference in this case.

(start + end) can overflow.

keep C++ code out of C files and vice-versa by splitting module preamble (original patch by Lars Mans)

switch to using PySet_GET_SIZE() for set size and truth requests as it's fast and also works as expected in PyPy

move declaration of __Pyx_sst_abs() macro to TypeConversion.c instead of more high-level ModuleSetupCode.c

--HG--
extra : amend_source : 69b25b07657205e86aade4f4f8285e721e4648b0

tune PyLong optimisations at (gcc) assembly level so that they prefer the most common case of a single-digit

--HG--
extra : transplant_source : V%1D%AF%BB%C2%E7l4%28%AE%8C%A9-%B0%B4%11%91%1B%FB%2C

avoid redundant type pointer comparison in "__Pyx_PyBaseString_Check()" as Py2.6+ already has fast builtin type checks

* Remove macros __Pyx_{NAME|DOC}STR
* Remove macros __Pyx_{Get|Set|Del}AttrString
* Remove macro  __Pyx_PyIndex_Check
* Remove workaround for missing BaseException in builtins

code objects: add number of kwonly args to number of regular arguments in Py2 (which does not support kwonly arguments for Python functions) to make sure they are still visible for introspection

--HG--
extra : amend_source : 8474ebfc7b6ab33b8cca9e4a478c54b2bee5f2fc

The (k=k) can results in "multiple unsequenced modifications to 'kind'"
warning when this macro is expanded twice in the same expression.

minor Py hex version fix for patch level when Py_hash_t was added (just in case someone still uses Py3.2 alpha versions)