Add command to build rst documentation only

Since the process to get the documentation built
is to build the whole project, that is too time consuming.
Additionally, using qdoc on the Qt API takes a lot of time.

This patch introduces the setup.py option called 'build_rst_docs'
which skip the general build, and only generates HTML documentation
based on all the .rst files we have for shiboken and pyside.

To use it:
    python setup.py build_rst_docs

The build will throw warnings related missing directories, and files,
which are generated on the 'qdoc' process, but since they are skipped
they are not present.

Some missing references warnings are skipped due to also come from
the qdoc-based step.

Task-number: PYSIDE-1106
Fixes: PYSIDE-1390
Change-Id: I4118fd3b64e217717df6cae093138f6951d37094
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

0 files changed, 0 insertions, 0 deletions