QUIC: moved "handshake failed" reason to send_alert. A QUIC handshake failure breaks down into several cases: - a handshake error which leads to a send_alert call - an error triggered by the add_handshake_data callback - internal errors (allocation etc) Previously, in the first case, only error code was set in the send_alert callback. Now the "handshake failed" reason phrase is set there as well. In the second case, both code and reason are set by add_handshake_data. In the last case, setting reason phrase is removed: returning NGX_ERROR now leads to closing the connection with just INTERNAL_ERROR. Reported by Jiuzhou Cui.

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.