emcweb: change to GPL2+ as granted by author

Sergey K <kayserg@gmail.com> 13/9/2013:
May I ask you ( or somebody else) to adjust files as you want to see them? When done, you can give them to me and I update miniemc2 SVN with that changes.
..
Sergey
emcweb/mongoose.c/.h: remove DOS line endings
emcweb/moongoose_wrapper: add license statement by original author
scripts: add license statement to new scripts by John Morris
scripts/pru_debug: add license statement
src/linuxcncconfig.py-tmp.in: add license statement
rtapi/flavor.c: add license statement
num2nam.h: remove unused include
rsyslogd config: add license statement
rtapi/ring.h: clarify Pavel's license, copy in Portable Audio license
rtapi/xeno_math: remove unused file without license declaration
rtapi/libm.c: change ownership to Michael Haberler

this was a complete rewrite anyway
tests: add license statements
www/js/miniemc2.js: add license extension to GPL2+ as granted by author
rtap/rt-preempt.*, rtapi_pci.c : add as LGPL 2.1+

as agreed with original author
rtapi: license-tag entirely new files

easy cases - these didnt exist
rtapi/list.h: license tag as GPL - replacement by sys/queue suggested (BSD)
rtapi: license tag new files which carry over code fragments from old RTAPI

in this case, attribute to 'Various Authors' as GPL2+
rtapi: license-tag remaining original files as LGPL2.1+
emcweb/js: update according to SergeyK rev 93

..
Updated SVN, repository at  https://miniemc2.googlecode.com/svn/trunk Rev.93,
diffs are here: https://code.google.com/p/miniemc2/source/detail?r=93

Sergey