Fixed post_action to not trigger "header already sent" alert. The alert was introduced in 03ff14058272 (1.5.4), and was triggered on each post_action invocation. There is no real need to call header filters in case of post_action, so return NGX_OK from ngx_http_send_header() if r->post_action is set.

make -f misc/GNUmakefile release

the required tools:
*) xsltproc to build CHANGES,
*) java and XSLScript ( http://pault.com/pault/XSLScript/ ) to build XSLTs
   from XSLScript sources.


make -f misc/GNUmakefile icons

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