(trunk) #5671 'dht-0.22': update third-party/dht.c to Juliusz Chroboczek's upstream v0.22

git-svn-id: file:///data/workdir/Transmission-svn//trunk@14268 1bcf1a7e-6170-4b50-b784-84ec52b2dec6
sync third-party/miniupnp/updateminiupnpcstrings.sh to Transmission's automake code

git-svn-id: file:///data/workdir/Transmission-svn//trunk@14269 1bcf1a7e-6170-4b50-b784-84ec52b2dec6
remove extraneous 'include event.h' that confused the mac build.

git-svn-id: file:///data/workdir/Transmission-svn//trunk@14270 1bcf1a7e-6170-4b50-b784-84ec52b2dec6
remove apostrophes from AC_DEFINE calls

git-svn-id: file:///data/workdir/Transmission-svn//trunk@14271 1bcf1a7e-6170-4b50-b784-84ec52b2dec6
silence warnings found by clang++

git-svn-id: file:///data/workdir/Transmission-svn//trunk@14272 1bcf1a7e-6170-4b50-b784-84ec52b2dec6