The following script was applied:
sed ':a;/part of MXE.$/{N;s/\n//;ba}' -i $(git grep -l 'part of MXE')
sed 's/\(part of MXE\).*\(See index.html\)/\1. \2/' -i \
$(git grep -l 'part of MXE.*See index.html')
before='This file is part of MXE. See index.html for further information.'
after='This file is part of MXE. See LICENSE.md for licensing information.'
sed "s/$before/$after/" -i $(git grep -l 'part of MXE')
Then git grep 'index.html for further information' revealed two other files.
One of them was patched manually (patch.mk). Makefile has text
"See index.html for further information" unrelated to licensing.
See https://github.com/mxe/mxe/issues/1500#issuecomment-241340792
PIRE is Perl Incompatible Regular Expressions library.
This library is aimed at checking a huge amount of text against
relatively many regular expressions. Roughly speaking, it can
just check whether given text maches the certain regexp, but
can do it really fast (more than 400 MB/s on our hardware is
common). Even more, multiple regexps can be combined together,
giving capability to check the text against apx. 10 regexps in
a single pass (and mantaining the same speed).
Pire was developed in Yandex (http://company.yandex.ru/) as a
part of its web crawler.
Homepage: https://github.com/yandex/pire
Tony Theodore
Boris Nagaev