bug#21696: [PATCH 1/2] grep: improvement of performance of grep -Fw

[Paul Eggert]

Thanks for those performance improvements. I installed them, with some minor 
changes to commentary. I also installed a couple of minor tweaks to the code, to 
use memrchr and to simplify the multibyte test. Attached are the revised set of 
patches.

0001-grep-improve-performance-of-grep-Fw.patch
Description: Text document

0002-grep-use-memchr-memrchar.patch
Description: Text document

0003-grep-use-grep-matcher-for-grep-Fw-when-unibyte.patch
Description: Text document

0004-grep-simplify-previous-change.patch
Description: Text document

0005-maint-add-news-item.patch
Description: Text document