o docs: add warnings about FILE: URLs on Windows [19]
o easy: fix curl_easy_duphandle for builds missing IPv6 that use c-ares [18]
o gskit: use our internal select wrapper for portability [12]
+ o http2: Fix erroneous debug message that h2 connection closed [21]
o Makefile.m32: Improve windres parameter compatibility [17]
o Makefile: run the cd commands in a subshell [1]
o multi: improve parameter check for curl_multi_remove_handle [6]
[18] = https://curl.haxx.se/bug/?i=5097
[19] = https://curl.haxx.se/bug/?i=5066
[20] = https://curl.haxx.se/bug/?i=5071
+ [21] = https://curl.haxx.se/bug/?i=5118