DOXYGEN: added SOC_DoxygenFormat.c to project
VHDL:
-register interface component: corrected doxygen comments
-documented testbench
NIOS:
-corrected dokumentation-header in c-source files
-corrected several doxy-comment mistakes
-prepared software for real register access
DOCUMENTATION:
-modified diagrams
-rewrote docu-text
-created block diagramm for reg interface component