Remove all the special-case code for INT64_IS_BUSTED, per decision that

we're not going to support that anymore.

I did keep the 64-bit-CRC-with-32-bit-arithmetic code, since it has a
performance excuse to live.  It's a bit moot since that's all ifdef'd
out, of course.

src/backend/utils/hash/pg_crc.c

@@ -19,7 +19,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/hash/pg_crc.c,v 1.22 2010/01/02 16:57:56 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/hash/pg_crc.c,v 1.23 2010/01/07 04:53:34 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -115,7 +115,7 @@ const uint32 pg_crc32_table[256] = {
  * (ECMA-182, available from http://www.ecma.ch/ecma1/STAND/ECMA-182.HTM)
  */
 
-#ifdef INT64_IS_BUSTED
+#if SIZEOF_VOID_P < 8		/* this test must match the one in pg_crc.h */
 
 const uint32 pg_crc64_table0[256] = {
 	0x00000000, 0xA9EA3693,
@@ -378,7 +378,8 @@ const uint32 pg_crc64_table1[256] = {
 	0x5DEDC41A, 0x1F1D25F1,
 	0xD80C07CD, 0x9AFCE626
 };
-#else							/* int64 works */
+
+#else							/* use int64 implementation */
 
 const uint64 pg_crc64_table[256] = {
 	UINT64CONST(0x0000000000000000), UINT64CONST(0x42F0E1EBA9EA3693),
@@ -510,6 +511,6 @@ const uint64 pg_crc64_table[256] = {
 	UINT64CONST(0x5DEDC41A34BBEEB2), UINT64CONST(0x1F1D25F19D51D821),
 	UINT64CONST(0xD80C07CD676F8394), UINT64CONST(0x9AFCE626CE85B507)
 };
-#endif   /* INT64_IS_BUSTED */
+#endif   /* SIZEOF_VOID_P < 8 */
 
 #endif   /* PROVIDE_64BIT_CRC */