[PATCH, libgfortran] Fix PR21875 (FM111.f) BN and BZ format specifiers

[Jerry DeLisle]

OK This looks better now.

This updated patch and test case bubblestrapped and regtested on 
i686-pc-linux-gnu.

2005-07-09  Jerry DeLisle  <jvdelisle@verizon.net>

     PR libfortran/21875  (FM111.f)
     * io/read.c (next_char): Return a ' ' character when BLANK_ZERO or
     BLANK_NULL are active.
     (read_decimal): Interpret ' ' character correctly for BZ or BN.
     (read_radix): Interpret ' ' character correctly for BZ or BN.
     (read_f): Interpret ' ' character correctly for BZ or BN.
     * gfortran.dg/test (fmt_read_bz_bn.f90): New test case.


NIST FM111.f retested OK.

Renamed and fixed the test case.

OK to commit?

Regards,

Jerry
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