Memory Consumption in Elektra is quite high as the key names are long and stored twice in memory.

• comparing of keys and thus searching in key sets must be possible with memcmp

• printing the escaped key name is not so much used

• store both

Only store one key name, suitable for comparing/searching/iterating over name.

• saves memory
• reduces API (keyUnescapedName*)

• rename keyUnescapedName to keyName
• To get the keyName you then would need something like `elektraEncodeKeyName(buffer, keyName(...