Spoike

A bit of a code cleanup, change a couple of prints.

Auto value for sv_demo_write_csqc now writes the csprogs into mvds, to hopefully reduce playback issues. the lazy record commands should be favouring .mvd.gz at least.

Try to support DP mods a bit better.

Try to be a bit more verbose about why webrtc might be failing.

Fix up some qc warnings from recent fteqcc improvements.

Make our mini http server report timestamps better, so wget's timestamping is happy.

Try to avoid sigpipe errors from tcp connections.

Make sure bad q2 layout strings won't go out of bounds. Add dev2 prints for bad layout string commands (there's probably lots of bad q2 mods out there, hence not dev1/unconditional).