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

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

Thanks

Standardize all gbuild bridge makefile.mk files
(main/*/prj/makefile.mk) to the version that sets gbuild
debug flags from the configure.ac debug settings, and make this the
standard gbuild template t

Standardize all gbuild bridge makefile.mk files
(main/*/prj/makefile.mk) to the version that sets gbuild
debug flags from the configure.ac debug settings, and make this the
standard gbuild template too.

Patch by: me



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1772520 13f79535-47bb-0310-9956-ffa450edef68

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Merge branches/gbuild-reintegration to trunk.



git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1755455 13f79535-47bb-0310-9956-ffa450edef68