python3: bump to 3.4.0rc1

This commit bumps the Python3 package to use Python 3.4.0rc1.

About the patches:

 * The patches below 100 are significantly changed, because like for
   Python 2.x, a good number of improvements have been made in the
   upstream Python for cross-compilation. Therefore, almost all of
   these patches have been modified.

 * All the patches above 100 are simply updated for Python 3.4.0, with
   a small refactoring for the handling of test modules.

The details of the python3.mk changes are:

 * --without-ensurepip to tell Python to not use PIP at build time.

 * Many environment variables are no longer passed, they were specific
   to our cross-compilation patches

 * The fixup of the LIBDIR in the Python Makefile is no longer needed
   since Python has switched to _sysconfigdata.py for distutils
   configuration instead of parsing the Makefile.

 * A new post patch hooks touches the two files generated by pgen to
   make sure they are newer than the pgen sources, which ensures pgen
   is not built/executed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/python3/python3-009-distutils-use-python-sysroot.patch

@@ -0,0 +1,57 @@
+Adjust library/header paths for cross-compilation
+
+When cross-compiling third-party extensions, the get_python_inc() or
+get_python_lib() can be called, to return the path to headers or
+libraries. However, they use the sys.prefix of the host Python, which
+returns incorrect paths when cross-compiling (paths pointing to host
+headers and libraries).
+
+In order to fix this, we introduce the _python_sysroot, _python_prefix
+and _python_exec_prefix variables, that allow to override these
+values, and get correct header/library paths when cross-compiling
+third-party Python modules.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+
+Index: b/Lib/distutils/sysconfig.py
+===================================================================
+--- a/Lib/distutils/sysconfig.py
++++ b/Lib/distutils/sysconfig.py
+@@ -16,10 +16,17 @@
+ from .errors import DistutilsPlatformError
+ 
+ # These are needed in a couple of spots, so just compute them once.
+-PREFIX = os.path.normpath(sys.prefix)
+-EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
+-BASE_PREFIX = os.path.normpath(sys.base_prefix)
+-BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
++if "_python_sysroot" in os.environ:
++    _sysroot=os.environ.get('_python_sysroot')
++    PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_prefix'))
++    EXEC_PREFIX = os.path.normpath(_sysroot + os.environ.get('_python_exec_prefix'))
++    BASE_PREFIX = PREFIX
++    BASE_EXEC_PREFIX = EXEC_PREFIX
++else:
++    PREFIX = os.path.normpath(sys.prefix)
++    EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
++    BASE_PREFIX = os.path.normpath(sys.base_prefix)
++    BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
+ 
+ # Path to the base directory of the project. On Windows the binary may
+ # live in project/PCBuild9.  If we're dealing with an x64 Windows build,
+Index: b/Lib/distutils/command/build_ext.py
+===================================================================
+--- a/Lib/distutils/command/build_ext.py
++++ b/Lib/distutils/command/build_ext.py
+@@ -248,7 +248,10 @@
+         if (sysconfig.get_config_var('Py_ENABLE_SHARED')):
+             if not sysconfig.python_build:
+                 # building third party extensions
+-                self.library_dirs.append(sysconfig.get_config_var('LIBDIR'))
++                libdir = sysconfig.get_config_var('LIBDIR')
++                if "_python_sysroot" in os.environ:
++                    libdir = os.environ.get("_python_sysroot") + libdir
++                self.library_dirs.append(libdir)
+             else:
+                 # building python standard extensions
+                 self.library_dirs.append('.')