Ensembles/ert — pull request #666 by joakim-hove (2014-12-12 15:59:05+00:00)
Title: ERT-825: Changes in doc building:

- A cmake variable ERT_DOC_EXTERNAL_ROOT is added, with that setting
external documentation can be included in the build process.

- The top level index.rst is created using configure_file() to include
the external documentation - if specified.

- The documentation building is based on symlinks from the build
directory instead of copies.