modify symtab.h struct naming

src/symtab.h

@@ -15,9 +15,9 @@
 /* the list of line numbers of the source 
  * code in which a variable is referenced
  */
-typedef struct LineListRec {
+typedef struct LineListEntry {
     int lineno;
-    struct LineListRec *next;
+    struct LineListEntry *next;
 } *LineList;
 
 /* The record in the bucket lists for
@@ -26,18 +26,18 @@ typedef struct LineListRec {
  * the list of line numbers in which
  * it appears in the source code
  */
-typedef struct BucketListRec {
+typedef struct BucketListEntry {
     char *name;
     LineList lines;
     ExpType type;
     int memloc; /* memory location for variable */
-    struct BucketListRec *next;
+    struct BucketListEntry *next;
 } *BucketList;
 
-typedef struct ScopeListRec {
+typedef struct Scope {
     char *name;
     int depth;
-    struct ScopeListRec *parent;
+    struct Scope *parent;
     BucketList hashTable[SYMTAB_SIZE];
 } *Scope;