it have some things to do:

query syntax isn't in the MDEV-4911, i did a QUERY_ID instead of a more comlpex syntax (since i never used bison before :P )

the query_id works, but i need a new error message ( "Unknown query id: %")

well i didn't make the gcc happy, there's some warnings, and i don't know if it's all right

i send this patch after MDEV-4916 patch, in other words the %expect value of sql_yacc.yy is wrong if you don't apply the MDEV-4916 patch

the 4916 is a IF_IDLE keyword to KILL command too

it only kill if there's no query running

well :) thanks guys! 
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