update windows script build and setup.exe generation

installer.iss use now relative paths instead of absolute.
the generated setup include all needed dll and python files.
adding a redirect for py2exe logging

now, on windows, log files are stored into %TMP%/BUNGLOO/BUNGLOO.log and

%TMP%/BUNGLOO/BUNGLOO_err.log

see also http://www.py2exe.org/index.cgi/StderrLog

close #238
Merge pull request #240 from dblugeon/issu-238

Fixe for Issue 238 and issue 228