This implements out-of-repository-theming, and removes the old
custom.ini theming that never worked on all platforms and had
no straight deployment story.
The new approach requires the CMAKE variable OEM_THEME_DIR to
point to a directory that must at least contain an OEM.cmake file
(check OWNCLOUD.cmake for possible options) as well as a themes.qrc
and a themes/ directory that directly correspond to the ones in
the source tree.
make doc will build all of the above, except for CHM,
which needs manual preparation and can be built with
make doc-chm. See doc/scripts/README.rst for details.
We do our best to ensure to detect the required tools
before adding targets, so a build should always succeed.
Exception: On Debian and Ubuntu, the following packages are
required to build the PDF target (in addition to pdflatex
itself, which is autodetected):
* texlive-latex-recommended
* texlive-latex-extra
* texlive-fonts-recommended
If pdflatex is present, but those are not, the doc target
will fail.
Results can be found in $BUILDDIR/doc/$format.
