* hberrors.h
+added define WARN_ASSIGN_TYPE and WARN_ASSIGN_SUSPECTED
* compiler.h
+added struct STACK_VAL_TYPE *PSTAC_VAL_TYPE
* harbour.l
+added support for tokens AS NUMERIC, AS CHARACTER, AS LOGICAL, AS DATE, AS ARRAY, AS OBJECT
*modified iLine to initialize to 0 rather than 1
* harbour.y
+added support for extended variable declaration with strong typing
+added logic to support warnings on incompatible and suspecious variable assignments
* compiler.h
added member cType to struct VAR
* harbour.y
added { iVarScope = VS_MEMVAR; } to PRIVATE, PUBLIC, and PARAMETERS statements to avoid errounous error:
"declaration follows executable statement"
added: AliasExp '=' Expression Crlf { /* TODO */ GenPCode1( _POP ); }
to statement definition to avoid parse error on M->Var = "Value" statments.
the _POP will balance the stack but the assignment is not implemented yet.
changed --iLine to iLine in yyerror() to correct errornous line numbers in parase error messages.
added check for null pointer on few references to pVars->szName
* hbpp.c, hbpmain.c, hbpint.c
prefixed messages in all printf() with \n and postfixed with \n until modification to GenWarning() and GenError()
* include/hberrors.h
added WARN_VAR_NOT_USED
* source/compiler/harbour.y
added warning message "Variable \'%s\' declared but not used in function: %s"
added linked list FunVars to record the usage of declared variables
added logic to maintain FunVars
added logic to check usage as per FunVars in GenReturn()
