@ helt - It is not sufficient just to have the wish - someone must do it.
It is extra work
, it is easy to do & so users can do it themselves.
p.s. Currently K-Meleon creates the entry below via xpcom_core.dll. K-Meleon.exe does the same but knows also Portable (named Single User in current setup).
This entry/string in/from xpcom_core.dll is redundant and not wanted for portables.
A bugfix for this problem has been submitted to the dev team. & the team has been asked that compilation is done with this. This way it is no extra work
It is up to Dorian to OK this as a general change because he makes the official GRE.