Fixed struct inconsistency for struct Hash_Table.

* scl_hash.h and hash.h have similar struct for struct Hash_Table
  and should have same members and types.
* fixed signed/unsigned comparison warning in HASHCreate function.

src/clutils/scl_hash.h

@@ -104,12 +104,12 @@ struct Element {
 };
 
 struct Hash_Table {
-    short    p;                 // Next bucket to be split
-    short    maxp;              // upper bound on p during expansion
-    long     KeyCount;          // current # keys
-    short    SegmentCount;      // current # segments
-    short    MinLoadFactor;
-    short    MaxLoadFactor;
+    unsigned int    p;                 // Next bucket to be split
+    unsigned int    maxp;              // upper bound on p during expansion
+    long            KeyCount;          // current # keys
+    unsigned int    SegmentCount;      // current # segments
+    unsigned int    MinLoadFactor;
+    unsigned int    MaxLoadFactor;
 #define DIRECTORY_SIZE        256
 #define DIRECTORY_SIZE_SHIFT    8    // log2(DIRECTORY_SIZE)
     struct Element ** Directory[DIRECTORY_SIZE];

src/express/hash.c

@@ -141,7 +141,7 @@ HASHinitialize() {
 
 Hash_Table
 HASHcreate( unsigned count ) {
-    int     i;
+    unsigned    i;
     Hash_Table  table;
 
     /*