nghttp2: bump to 1.39.1

nghttp2: bump to 1.39.1

7ffc239b Bump up version number to 1.39.1
bc886a0e Fix FPE with default backend
a3a14a9c Fix log-level is not set with cmd-line or configuration file
acfb3607 Update manual pages
bdfd14c2 Bump up version number to 1.39.0, LT revision to 31:4:17
cddc09fe Update AUTHORS
3c3b6ae8 Add missing colon
2f83aa9e Fix multi-line text travis issue
fc591d0c Run nghttpx integration test with cmake build
9a17c3ef travis: use multi-line text
b7220f07 cmake: Remove SPDY related files
a1556fd1 Merge pull request #1356 from nghttp2/fix-log-level-on-reload
77f1c872 nghttpx: Fix unchanged log level on configuration reload
49ce44e1 Merge pull request #1352 from nghttp2/travis-osx
f54b3ffc Fix libxml2 CFLAGS output
b0f5e5cc Implement daemon() using fork() for OSX
8d6ecd66 Enable osx build on travis
f82fb521 Update doc
2e1975dd clang-format-8
97ce392b Merge pull request #1347 from nghttp2/nghttpx-ignore-cl-te-on-upgrade
afefbda5 Ignore content-length in 200 response to CONNECT request
4fca2502 nghttpx: Ignore Content-Length and Transfer-Encoding in 1xx or 200 to CONNECT
6975c336 Update llhttp to 1.1.3
0288093c Fix llhttp_get_error_pos usage
a3a03481 Merge pull request #1340 from nghttp2/nghttpx-llhttp
c64d2573 Replace http-parser with llhttp
f028cc43 clang-format
302e3746 Merge pull request #1337 from nghttp2/upgrade-mruby
3cdbc5f5 Merge pull request #1335 from adamgolebiowski/boost-1.70
a6925186 Fix mruby build error
45d63d20 Upgrade mruby to 2.0.1
cbba1ebf asio: support boost-1.70
e86d1378 Bump up version number to 1.39.0-DEV
4a9d2005 Update manual pages

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
(cherry picked from commit 865e25e049f6d5a6488c5e83a7d89d0dc896c876)