outcommented main part of run body

as this will be replaced by the module chain executement. Maybe this came in
via a merge I did not check carefully enough!
The module chain length is constant

As processor modules are stored in an array inside a module_node, and each other
module does only appear once.
Implementation of internal execute functions

First implementation of most internal execute-functions added.
added first execute-code (for builder)
added execute-code files (simple copy-paste-modify)
check for utf8-validity after each module-exec (if configured)
utf8-checker function body added