Remove case-sensitive identifiers. Thanks for Dan McGuirk for a reversal patch.

src/test/regress/expected.input

@@ -6699,38 +6699,26 @@ QUERY: SELECT user_relns() AS user_relns
    ORDER BY user_relns;
 user_relns   
 -------------
-ABSTIME_TBL  
-BOOLTBL1     
-BOOLTBL2     
-BOX_TBL      
-Bprime       
-CHAR16_TBL   
-CHAR2_TBL    
-CHAR4_TBL    
-CHAR8_TBL    
-CHAR_TBL     
-FLOAT4_TBL   
-FLOAT8_TBL   
-INT2_TBL     
-INT4_TBL     
-OIDINT2_TBL  
-OIDINT4_TBL  
-OIDNAME_TBL  
-OID_TBL      
-POINT_TBL    
-POLYGON_TBL  
-RELTIME_TBL  
-TINTERVAL_TBL
 a,775132     
 a_star       
+abstime_tbl  
 aggtest      
 arrtest      
 b_star       
+booltbl1     
+booltbl2     
+box_tbl      
+bprime       
 bt_c16_heap  
 bt_f8_heap   
 bt_i4_heap   
 bt_txt_heap  
 c_star       
+char16_tbl   
+char2_tbl    
+char4_tbl    
+char8_tbl    
+char_tbl     
 city         
 d_star       
 dept         
@@ -6739,6 +6727,8 @@ emp
 equipment_r  
 f_star       
 fast_emp4000 
+float4_tbl   
+float8_tbl   
 hash_c16_heap
 hash_f8_heap 
 hash_i4_heap 
@@ -6746,12 +6736,21 @@ hash_txt_heap
 hobbies_r    
 iexit        
 ihighway     
+int2_tbl     
+int4_tbl     
 iportaltest  
+oid_tbl      
+oidint2_tbl  
+oidint4_tbl  
+oidname_tbl  
 onek         
 onek2        
 person       
+point_tbl    
+polygon_tbl  
 ramp         
 real_city    
+reltime_tbl  
 road         
 shighway     
 slow_emp4000 
@@ -6760,6 +6759,7 @@ stud_emp
 student      
 tenk1        
 tenk2        
+tinterval_tbl
 toyemp       
 xacttest     
 (63 rows)