* build-aux/git-hooks/pre-commit: Use EMACS_GIT_CORE_WHITESPACE,
not the global core.whitespace, for whitespace checks when committing.
This defaults to empty, which means to use the Git default, and
this should fix Bug#80428 “C indentation in .gitattributes, macros
in .dir-locals.el”. The environment variable is a better way to
temporarily override the default.
10979aa458