AIX fixes.

src/backend/utils/adt/float.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.21 1997/09/13 03:10:11 thomas Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.22 1997/09/23 22:53:37 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1523,6 +1523,8 @@ double		x;
 #undef class
 #endif							/* CLASS_CONFICT */
 
+#include <float.h>
+
 static int
 isinf(x)
 double		x;

src/template/.similar

@@ -13,3 +13,4 @@ i586-pc-linux-gnu=linux-elf
 i686-pc-linux-gnu=linux-elf
 sparc-unknown-linux-gnu=linux-elf
 alpha-unknown-linux-gnu=linuxalpha
+powerpc-ibm-aix4.1.5.0