copy and paste error in configure.in

[Andreas Vögele]

Hi,

there are two mistakes in the newest revision of configure.in.  In line 
561 and line 564 UINTMAX_LIMITS should be set instead of INTMAX_LIMITS.

SCM_I_GSC_T_UINTMAX=0
if test "$scm_stdint_has_uintmax"; then
[...]
elif test "$ac_cv_sizeof_unsigned_long_long" -ne 0; then
  SCM_I_GSC_T_UINTMAX='"unsigned long long"'
  SCM_I_GSC_T_INTMAX_LIMITS='"SCM_I_ULLONG"' <----
else
  SCM_I_GSC_T_UINTMAX='"unsigned long"'
  SCM_I_GSC_T_INTMAX_LIMITS='"ULONG"' <----
fi
AC_SUBST([SCM_I_GSC_T_UINTMAX])
AC_SUBST([SCM_I_GSC_T_UINTMAX_LIMITS])