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

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

Thanks

Port main/ucb to gbuild.

Use real version detection from the library instead of from the header
files for apr, apr-util, and serf.

Add apr, apr-util, and serf to main/RepositoryExternal.mk where th

Port main/ucb to gbuild.

Use real version detection from the library instead of from the header
files for apr, apr-util, and serf.

Add apr, apr-util, and serf to main/RepositoryExternal.mk where they belong.

For GNOMEVFS and GIO, use the CFLAGS and LIBS detected by ./configure
instead of trying to rediscover them like the dmake makefiles did.

Patch by: me


git-svn-id: https://svn.apache.org/repos/asf/openoffice/trunk@1777194 13f79535-47bb-0310-9956-ffa450edef68

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