Add Irix 5.2, 6.3 support.

2001-03-07  Alexandre Oliva  <aoliva@redhat.com>

	Add Irix 5.2, 6.3 support.
        * config/os/irix/bits: Renamed too...
        * config/os/irix/irix6.5/bits: this.
        * config/os/irix/irix5.2/bits: New, copied from irix6.5/bits.
        * config/os/irix/irix5.2/bits/ctype_base.h: Use _U, _L, _N,
        _X, _S, _P, _C and _B instead of IRIX-6.5 _IS* macros.
        * config/os/irix/irix5.2/bits/ctype_noninline.h
        (ctype<char>::ctype): Initialize _M_table with __ctype.
        * configure.target: Adjust.

From-SVN: r40294