* [core]: fix recent oyConfig -> DB storage bug

... from commit #0353c052
* [sources]: add oyCMMapi9_s::key_base member

... to allow easier key name detection. Using of the static options
is pretty fragile.
* [oicc]: set key_base to OY_CMM_STD

change oforms group type=h3 to type=frame

use system defined _WIN32 macro
* [sources]: add optional node arg to oyOptions_ForFilter_()
* [templates]: set node options according to current state

this fixes some problems in keeping the cmm pattern
in the "renderer" and "context" keys working

oyFilterNode_FromOptions() uses now the correct fallbacks from options,
DB and oyCMMapi9_s module.
* [test]: relax the oyOptionChoicesGet2(oyWIDGET_CMM_CONTEXT) test

It might be wrong and can therefore fail. It is not clear if we want to
fix the DB on the fly or provide fallbacks as we implemented in the
recent commits.