AC_FC_HAVE_BOZ
Test whether the FC compiler supports BOZ constants
in the Fortran 95 style. These are integer constants written in
the format B'xxx', O'xxx' and
Z'xxx'. If so set the preprocessor variable
HAVE_BOZ to be 1. This should be true of all Fortran 95,
and later, compilers.
See also AC_FC_HAVE_TYPELESS_BOZ and AC_FC_HAVE_OLD_TYPELESS_BOZ.