[FIX] Remove unused EplObdkCal.c/h

Change-Id: Id10af587a67c33ef2d47791886cf547d2ef0b2ea
Reviewed-on: http://brateggevoat1/gerrit/488
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] revised fpga directory for a clear overview

The fpga dir is divided into boards and ipcore. The boards dir holds
Altera and Xilinx boards. The ipcore dir is divided into Altera, Xilinx
and common hdl-files.

Change-Id: Id5ac803cf61c2770f87da33e5783438e92b3f7d9
Reviewed-on: http://brateggevoat1/gerrit/489
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] adjust revised directory structure in Altera and Xilinx demos

Change-Id: I1dbe9e54f830779120e636c4490a8177ca81c450
Reviewed-on: http://brateggevoat1/gerrit/490
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[TASK] introduced download-all command for Xilinx demo

The command 'make download-all' enables to download the bitstream and
the elf to the FPGA.

Change-Id: Ied8fc74ed260c1a557b7f088bbc7b4f9148bc18d
Reviewed-on: http://brateggevoat1/gerrit/482
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
[FIX] Add correct detection of exisiting shared buffer

If a shared memory segment was already existing it was detected as
existing shared buffer. This causes problems if a segment was
accidentially not removed. Now the number of attached processes is
examined to determine if the shared buffer is already existing.

Change-Id: Iace033744b617a3928ae88f93ebda327d050d905
Reviewed-on: http://brateggevoat1/gerrit/498
Tested-by: Jenkins <jenkins@brateggevoat1.br-automation.co.at>
Reviewed-by: Josef Baumgartner <josef.baumgartner@br-automation.com>
[FIX] Fix cleaning of PDO memory in pdou.c

Change-Id: I9d380fbe0a0f247b5a3d15f31e5dd723eb65b2fd
Reviewed-on: http://brateggevoat1/gerrit/496
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>
[FIX] Add missing shutdown of errhnducal in errhndu

Change-Id: I93ef2530fef1ac1d039a66610b42e42e0742fb23
Reviewed-on: http://brateggevoat1/gerrit/497
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>