renaming of removecomponentoption to ignorekomponentoption, removing of addcomponentoption
move code for keepcomponentoption from itclBuiltin.c as Tcl code to itclHullCmds.tcl.
moved keepcomponentoption from itclBuiltin.c to here as Tcl code. renaming of removecomponentoption to ignorekomponentoption
fixes for keepcomponentoption and some renaming.
Added new command: info context
new code for extendedclass component handling
new code for extendedclass component handling
removed not necessary code
code for extendedclass
new code and changes for extendedclass