ae.net.ietf.message: Fix author and date parsing
ae.utils.sini: Allow partial customization of deserialization
DMD 2.064 compilation fix
ae.utils.array: Add OrderedMap
ae.sys.timing: Add messages to asserts
ae.sys.file: Fix writeFileAsync
ae.sys.file: Disable Windows symlink unittests
ae.sys.cmd: Fix iconv signature
ae.sys.timing: Fix timer threading problem

We only had one __gshared Timer, but a non-shared static this.
This meant that every new thread clobbered mainTimer.
The __gshared attribute was a hack for ae.sys.shutdown,
which is not needed any more thanks to ae.net.shutdown.
ae.sys.timing: Move .restart API from Timer to TimerTask
ae.sys.cmd: Add iconv UTF-8 overload for simplicity and compatibility