FIX: this fixes the "hf mf sniff l d f" command, which has been broken for a while. The cuid is correct used for decrypting.

FIX: The flushing of logentries.
ADD: "hf mf sniff" - added the sniffing of UID's with a uidlen of 10.

Whats left? The key is not always found even if we use the "mfkey64" approach.

ADD: added the parity_zero attack in "hf mf mifare".  Still not working since piwi's changes to the iso14443a.c,  maybe needs a param to tell it to collect nonces for this special attack.
CHG: extracted some help-texts into usage_* methods. Changed some text as well

FIX:  "hf mf sim" command now uses both  mfkey32 and mfkey32_moebius version to find the key in attack mode.
CHG:  "hf mf sim" also now defaults to emul_memory to read a 4 byte UID.

client/scripting.c

@@ -487,7 +487,6 @@ int setLuaPath( lua_State* L, const char* path )
 	return 0; // all done!
 }
 
-
 int set_pm3_libraries(lua_State *L)
 {