pre-commit auto remove trailing whitespace from `.mk` files (#377)

If there are too many changes / files I can create a smaller PR

Thanks

pre-commit(end-of-file-fixer): auto fix `.mk` files (#266)

* pre-commit(end-of-file-fixer): auto fix `.mk` files

* Update makefile.mk

* Update makefile.mk

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Co-authored-by: Matthias Seid

pre-commit(end-of-file-fixer): auto fix `.mk` files (#266)

* pre-commit(end-of-file-fixer): auto fix `.mk` files

* Update makefile.mk

* Update makefile.mk

---------

Co-authored-by: Matthias Seidel <mseidel@apache.org>

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Port qadevOOo to gbuild/Ant.

Patch by: me



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1859134 13f79535-47bb-0310-9956-ffa450edef68