python: update to version 2.7.15

Update to the latest stable version

License-Update: Copyright year updated to include 2018

Remove the alignment patch that is included upstream

(From OE-Core rev: 855020053906478cea164ed254c08bedce48479d)

Signed-off-by: Derek Straka <derek@asterius.io>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/python/python/fix-gc-alignment.patch

@@ -1,43 +0,0 @@
-Upstream-Status: Submitted
-Signed-off-by: Ross Burton <ross.burton@intel.com>
-
-Fix for over-aligned GC info
-Patch by Florian Weimer
-
-See: https://bugzilla.redhat.com/show_bug.cgi?id=1540316
-Upstream discussion: https://mail.python.org/pipermail/python-dev/2018-January/152000.html
-
-diff --git a/Include/objimpl.h b/Include/objimpl.h
-index 55e83eced6..aa906144dc 100644
---- a/Include/objimpl.h
-+++ b/Include/objimpl.h
-@@ -248,6 +248,18 @@ PyAPI_FUNC(PyVarObject *) _PyObject_GC_Resize(PyVarObject *, Py_ssize_t);
- /* for source compatibility with 2.2 */
- #define _PyObject_GC_Del PyObject_GC_Del
- 
-+/* Former over-aligned definition of PyGC_Head, used to compute the
-+   size of the padding for the new version below. */
-+union _gc_head;
-+union _gc_head_old {
-+    struct {
-+        union _gc_head *gc_next;
-+        union _gc_head *gc_prev;
-+        Py_ssize_t gc_refs;
-+    } gc;
-+    long double dummy;
-+};
-+
- /* GC information is stored BEFORE the object structure. */
- typedef union _gc_head {
-     struct {
-@@ -255,7 +267,8 @@ typedef union _gc_head {
-         union _gc_head *gc_prev;
-         Py_ssize_t gc_refs;
-     } gc;
--    long double dummy;  /* force worst-case alignment */
-+    double dummy;  /* force worst-case alignment */
-+    char dummy_padding[sizeof(union _gc_head_old)];
- } PyGC_Head;
- 
- extern PyGC_Head *_PyGC_generation0;
-