Gwenhywfar

Added functions GWEN_Param_List_GetByName() and GWEN_Param_Tree_GetByName().

Merge branch 'master' of https://git.aqbanking.de/git/gwenhywfar

Re-indentation of source code to get a unified look of the source.

This was done using astyle-2.03 with the following command:

astyle --style=java --indent=spaces=2 --break-closing-brackets --keep-one-line-blocks --suffix=none --recursive 'src/*.h' 'src/*.c' 'gui/*.h*' 'gui/*.c*'...

Make GWEN_Error_SimpleToString function available in public interface.

This function is merely a GWEN_Error -> string converter and hence useful
in itself. No extra buffers needed, no extra texts added.

Fix compiler warnings/errors: "Variable defined but not used"

Minor error message improvements.

Merge branch 'master' of https://git.aqbanking.de/git/gwenhywfar

Provide generated files for GWEN_PARAM.

GWEN_PARAM is provided using typemaker2, so in order to make the code
compilable even without typemaker2 already being built we provide the
generated files here as well.

Added class GWEN_PARAM.

This is used at least by AqRadBase, and probably by my other projects
as well. It can be used to provide descriptions for settings and a framework
to manage those settings.

AqRadBase will use it to manage the settings of ADCM_CONVERTER and...

Add configure check for sufficiently new gnutls as otherwise this won't compile.