MSVC compiler support [patch 31]: CHAR_BIT

[Michael Goffioul]

CHAR_BIT is defined in limits.h under Win32

Index: liboctave/oct-types.h.in
===================================================================
RCS file: /cvs/octave/liboctave/oct-types.h.in,v
retrieving revision 1.4
diff -p -c -r1.4 oct-types.h.in
*** liboctave/oct-types.h.in    23 May 2006 06:05:14 -0000      1.4
--- liboctave/oct-types.h.in    17 Oct 2006 11:07:42 -0000
*************** typedef @OCTAVE_IDX_TYPE@ octave_idx_typ
*** 32,37 ****
--- 32,41 ----
  #include <inttypes.h>
  #else
  
+ #if defined (HAVE_LIMITS_H)
+ #include <limits.h>
+ #endif
+ 
  #if CHAR_BIT == 8
  typedef signed char int8_t;
  typedef unsigned char uint8_t;