Remove tabs on blanklines in Makefile sources. This prevents a
'suspicious line' warning when editing & saving Makefile using Emacs.
Merge branch 'master' of https://git.php.net/repository/php-src

* 'master' of https://git.php.net/repository/php-src:
  Improved implementation of NOP removal pass from O(n^2) to O(n) (hnw)
  A minor fix for configure outpu (Tony)