"backtrace through signal handler" to "i*86-*-sysv4*".
* gdb.base/signals.exp: Add xfail for "'next' behaved as
continue" case. Add "known SVR4 bug" to fail message.
Add "i*86-*-bsdi2.0" xfail for "handle all print".
Add "i*86-*-bsdi2.0" xfail for "backtrace in signals_tests_1".
* gdb.base/ptype.exp: Add "i*86-*-sysv4*" xfail for
"whatis unnamed typedef'd enum..." and "ptype t_char_array".
* gdb.base/langs.exp: Add "i*86-*-sysv4*" xfail for
"up to foo in langs.exp", "show language at foo in
langs.exp", "up to cppsub_ in langs.exp", "show
language at cppsub_ in langs.exp", "up to fsub in
langs.exp", and "show language at fsub in langs.exp".
* gdb.base/corefile.exp: Add "i*86-*-sysv4*" to xfail for
"bactrace in corefile.exp".
* gdb.base/callfuncs.exp: Change xfail to "i*86-*-*" for
"call inferior function with struct - returns float" and
"call inferior function with struct - returns double".
inferior functions and return various types.
* gdb.base/callfuncs.c: Add functions to receive a struct
and return a member of the struct, in various types.
