fbc: PEEK, POKE, and SWAP name resolution

- PEEK, POKE, and SWAP are now quirk words instead
  of keywords allowing these names to be used as
  member procedure names

Author: jayrm

changelog.txt

@@ -24,6 +24,7 @@ Version 1.20.0
 - rtlib: When array out of bounds check files, show variable/field name, index, lbound, and ubound in the error message  
 - fbc: '-exx' enables '-earraydims' by default to error on wrong number of array dimensions or unallocated arrays breaking previous use of @array(0,...) = NULL to detect unallocated arrays
 - fbc: set bit value '__FB_ERR__' = &h400 if '-earraydims' is enabled
+- PEEK, POKE, and SWAP are now quirk words instead of keywords allowing these names to be used as member procedure names 
 
 [added]
 - x86_64: optimize SHL MOD INTDIV to use 32-bit operation when result will be converted to long/ulong

src/compiler/symb-keyword.bas

@@ -128,9 +128,9 @@ dim shared kwdTb( 0 to FB_TOKENS-1 ) as SYMBKWD => _
 	( @"IS"         , FB_TK_IS          , FB_TKCLASS_KEYWORD ), _
 	( @"USING"      , FB_TK_USING       , FB_TKCLASS_KEYWORD ), _
 	( @"LEN"        , FB_TK_LEN         , FB_TKCLASS_QUIRKWD ), _
-	( @"PEEK"       , FB_TK_PEEK        , FB_TKCLASS_KEYWORD ), _
-	( @"POKE"       , FB_TK_POKE        , FB_TKCLASS_KEYWORD ), _
-	( @"SWAP"       , FB_TK_SWAP        , FB_TKCLASS_KEYWORD ), _
+	( @"PEEK"       , FB_TK_PEEK        , FB_TKCLASS_QUIRKWD ), _
+	( @"POKE"       , FB_TK_POKE        , FB_TKCLASS_QUIRKWD ), _
+	( @"SWAP"       , FB_TK_SWAP        , FB_TKCLASS_QUIRKWD ), _
 	( @"COMMON"     , FB_TK_COMMON      , FB_TKCLASS_KEYWORD ), _
 	( @"ENUM"       , FB_TK_ENUM        , FB_TKCLASS_KEYWORD ), _
 	( @"ASM"        , FB_TK_ASM         , FB_TKCLASS_KEYWORD , KWD_OPTION_NO_QB ), _