Added support for old style (K&R) function declarations.

Several renames for better readibility.
Removed separate struct and enum symbol tables in favour of one tag table.
Check for some more error conditions or dubious constructs.


git-svn-id: svn://svn.cc65.org/cc65/trunk@62 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/cc65/error.c

@@ -65,6 +65,7 @@ static char* WarnMsg [WARN_COUNT-1] = {
     "`%s' is defined but never used",
     "Constant is long",
     "`/*' found inside a comment",
+    "Useless declaration",
 };
 
 
@@ -147,6 +148,7 @@ static char* ErrMsg [ERR_COUNT-1] = {
     "Illegal size of data type",
     "__fastcall__ is not allowed for C functions",
     "Variable has unknown size",
+    "Unknown identifier: `%s'",
 };