n4.4.7
all: Make header guard names consistent
Merge commit '6a93b596c5c3af31b843d63013a7985ffeea354d'
compat/cuda: correct ushort4 to use ushort
Merge commit '6bb99757b780144d9fa27cdce09d3621e1a0ed43'
additional math.h functions for djgpp
Merge remote-tracking branch 'qatar/master'
compat/solaris/make_sunver.pl: Use /usr/bin/env perl instead of /usr/bin/perl
compat/windows/makedef: Allow building shared libs with MSVC under WSL
Merge commit 'f929ab0569ff31ed5a59b0b0adb7ce09df3fca39'
compat/os2threads: define INCL_DOSERRORS
compat/strtod: Add missing const qualifiers.
all: Add missing header guards
compat/w32dlfcn: add missing config.h include
avformat/udp: support w32pthreads compat