Background subrequests for cache updates. Previously, cache background update might not work as expected, making client wait for it to complete before receiving the final part of a stale response. This could happen if the response could not be sent to the client socket in one filter chain call. Now background cache update is done in a background subrequest. This type of subrequest does not block any other subrequests or the main request.

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.