* configure.ac (i[[3456789]]86-*-vsta, i[[3456789]]86-*-go32*,
i[[3456789]]86-*-beos*, powerpc-*-beos*, m68k-hp-hpux*,
m68k-apollo-sysv*, m68k-apollo-bsd*, m88k-dg-dgux*,
m88k-harris-cxux*, m88k-motorola-sysv*, mips*-dec-ultrix*,
mips*-nec-sysv4*, mips*-sgi-irix4*, mips*-*-sysv4*, mips*-*-sysv*,
i370-ibm-opened*, i[[3456789]]86-*-sysv5*, i[[3456789]]86-*-dgux*,
i[[3456789]]86-ncr-sysv4.3*, i[[3456789]]86-ncr-sysv4*,
i[[3456789]]86-*-sco3.2v5*, i[[3456789]]86-*-sco*,
i[[3456789]]86-*-udk*, vax-*-ultrix2*, m68k-sun-sunos*,
hppa*-*-hiux*, *-*-hiux*, rs6000-*-lynxos*, *-*-sysv4*,
*-*-rhapsody*): Remove host cases.
* configure: Regenerate.
config:
* mh-cxux, mh-decstation, mh-dgux386, mh-lynxrs6k, mh-ncr3000,
mh-necv4, mh-sco, mh-sysv5: Remove.
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