Contrib: unicode2nginx compatibility with recent Perl versions. In recent Perl versions unpack("C*") unpacks wide characters by default, likely since perl 5.10 (seen at least in perl 5.20). Replaced with unpack("U0C*") instead to unpack bytes. While here, improved style and updated my email.

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.