python: bump to 2.7.9

In addition to doing the bump, this commit also:

 - Refreshes all the patches
 - Removes python-003-properly-detect-if-python-build.patch, which has
   been applied upstream.
 - Passes the --without-ensurepip option, like is done in Python 3, to
   avoid having Python use PIP to automatically download stuff when it
   is being built.
 - PYTHON_LIBTOOL_PATH = NO is added to prevent Buildroot from trying
   to patch a version of libtool for which we don't have matching
   patches, which isn't a problem since we're anyway not using the
   part of the Python sources that uses libtool (it's the built-in
   copy of libffi, and we use the external libffi).

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

package/python/python-012-support-library-path-old-compilers.patch

@@ -20,7 +20,7 @@ Index: b/setup.py
 ===================================================================
 --- a/setup.py
 +++ b/setup.py
-@@ -416,6 +416,7 @@
+@@ -418,6 +418,7 @@
          in_incdirs = False
          inc_dirs = []
          lib_dirs = []
@@ -28,7 +28,7 @@ Index: b/setup.py
          try:
              if ret >> 8 == 0:
                  with open(tmpfile) as fp:
-@@ -427,6 +428,7 @@
+@@ -429,6 +430,7 @@
                          elif line.startswith("End of search list"):
                              in_incdirs = False
                          elif is_gcc and line.startswith("LIBRARY_PATH"):
@@ -36,7 +36,7 @@ Index: b/setup.py
                              for d in line.strip().split("=")[1].split(":"):
                                  d = os.path.normpath(d)
                                  if '/gcc/' not in d:
-@@ -438,6 +440,15 @@
+@@ -440,6 +442,15 @@
          finally:
              os.unlink(tmpfile)