QUIC: congestion control in ngx_quic_frame_sendto(). Previously ngx_quic_frame_sendto() ignored congestion control and did not contribute to in_flight counter. Now congestion control window is checked unless ignore_congestion flag is set. Also, in_flight counter is incremented and the frame is stored in ctx->sent queue if it's ack-eliciting. This behavior is now similar to ngx_quic_output_packet().

make -f misc/GNUmakefile release

the required tools:
*) xsltproc to build CHANGES,
*) xslscript.pl ( http://hg.nginx.org/xslscript ) to build XSLTs
   from XSLScript sources.


make -f misc/GNUmakefile icons

the required tool:
*) netpbm to create Win32 icons from xpm sources.