Upstream keepalive: drop ready flag on EAGAIN from recv(MSG_PEEK). Keeping the ready flag in this case might results in missing notification of broken connection until nginx tried to use it again. While there, stale comment about stale event was removed since this function is also can be called directly.

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.