[FIX] Fix setting of macro EPL_USE_SHAREDBUFF

Change the conditional to use the correct event queue
macros.

Change-Id: Ie471cd0fae05b648240f168dc3e3a02b83e6d3f6
Reviewed-on: http://brateggevoat1/gerrit/452
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Joerg Zelenka <joerg.zelenka@br-automation.com>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] Improve documentation

- Change doxygen configuration
- Add module documentation

Change-Id: I9b470ccc11826bac2c2196de0863f541c5027554
Reviewed-on: http://brateggevoat1/gerrit/456
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>