* add IDoc Segement support as part of TABL
IDoc Segement type/definition is just customizing and has no own transport object but it generates a structure and is coupled to it
The segment type/definitions have their own XML at the TABL object
* fix abaplint errors
* move segment type/defintion to TABL xml
* mark inactive objects in repo list
Inactive object are marked in the repo list
The sort order for changed files is not changed
unchanged inactive files come right after the changed files
* move acitve check to object interface
* add is_active for objects up to F
* add is_active for objects up to P
* add is_active for objects up to T
* add is_active for objects up to X
all core object implement (except SSFO) the standard active check via FM RS_INACTIVE_OBJECTS_WARNING now
* add is_active to plugins bridge - always active
* finish object interface implementation + objects
* add is_active for offline with object interface
* rename returning to RV_
* use returning for serialize
* cleanup, PP, UT
* clear PRESP and PWORK
clear username fields PRESP and PWORK
* remove unused FM exceptions
if sy-subrc is analysed (only <> 0) no detailed FM exceptions are needed, only OTHERS
* set PRESP and PWORK on deserialization
PRESP and PWORK is not set to SY-UNAME by default so set it explicitly
