python3: Update to 3.7.8, refresh/rework patches

This contains a fix for CVE-2020-8492 (Denial of service in
urllib.request.AbstractBasicAuthHandler)[1].

This also updates the setuptools and pip packages to 47.1.0 and 20.1.1,
respectively.

[1]: https://docs.python.org/release/3.7.8/whatsnew/changelog.html#python-3-7-8-release-candidate-1

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

lang/python/python3/patches/026-bpo-34585-run-autoconf-GH-9411.patch

@@ -10,8 +10,6 @@ Follow up to 2a9c3805ddedf282881ef7811a561c70b74f80b1 (bpo-34585).
  pyconfig.h.in |   4 ++
  3 files changed, 51 insertions(+), 100 deletions(-)
 
-diff --git a/aclocal.m4 b/aclocal.m4
-index 6a24d8e6b9c00..030e6877de9f7 100644
 --- a/aclocal.m4
 +++ b/aclocal.m4
 @@ -288,4 +288,5 @@ AS_VAR_COPY([$1], [pkg_cv_][$1])
@@ -20,11 +18,9 @@ index 6a24d8e6b9c00..030e6877de9f7 100644
  
 +m4_include([m4/ax_c_float_words_bigendian.m4])
  m4_include([m4/ax_check_openssl.m4])
-diff --git a/configure b/configure
-index 7b0c734b5e25e..38546d6ca7b40 100755
 --- a/configure
 +++ b/configure
-@@ -13853,131 +13853,77 @@ fi
+@@ -14232,131 +14232,77 @@ fi
  # * Check for various properties of floating point *
  # **************************************************
  
@@ -202,8 +198,6 @@ index 7b0c734b5e25e..38546d6ca7b40 100755
  
  $as_echo "#define DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754 1" >>confdefs.h
  
-diff --git a/pyconfig.h.in b/pyconfig.h.in
-index 360f79994fafe..41e0479cad2e3 100644
 --- a/pyconfig.h.in
 +++ b/pyconfig.h.in
 @@ -30,6 +30,10 @@