Issue #7766: Change sys.getwindowsversion() return value to a named tuple and add the additional members returned in an OSVERSIONINFOEX structure. The new members are service_pack_major, service_pack_minor, suite_mask, and product_type.

Fixed #7748: now upload and register commands don't need to force the encoding anymore : DistributionMetada returns utf8 strings

dtoa.c fix from upstream that fixes incorrectly rounded results for certain subnormals that are also halfway cases.

this fixes the first bug described in issue #7743.

Increased the overflow value on test_dealloc to make sure that it is big enough even for wide builds.

in issue 7743).

This should fix the failure introduced in r77680. The error message is now different and it caused the test to fail. The failing test is not present in 2.5 so it is failing only on 2.6 and newer versions.

  (CVE_2009_3560).