* compiler.h
added member iUsed to struct VAR
* hberrors.h
added define of codeblock parameter not used warning
* harbour.y
removed PDECLARED_VAR struct definition
removed code to maintain FunVars list
added code to GetVarPos() to reflect use of declared variable
added logic to FixReturns() and CodeBlockEnd() to generate warnings on non used decalred vaiables
removed previous version of nonused declared variables warnings from FunDedf() and {Main}
449e685a1f