Do also allow ':' as an attribute separator.

git-svn-id: svn://svn.cc65.org/cc65/trunk@5588 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/sp65/attr.c

@@ -261,7 +261,7 @@ Collection* ParseAttrList (const char* List, const char** NameList, unsigned Nam
     const char* L = List;
     StrBuf B = AUTO_STRBUF_INITIALIZER;
     while (1) {
-        if (*L == ',' || *L == '\0') {
+        if (*L == ',' || *L == ':' || *L == '\0') {
 
             /* Terminate the string */
             SB_Terminate (&B);