* gdb.base/break.exp: Ignore compiler warnings when compiling

    * gdb.base/break.exp: Ignore compiler warnings when compiling
        break.c.
        * gdb.base/callfuncs.exp: Don't run these tests on the h8300.
        * gdb.base/default.exp: Add h8300 xfails.  Handle messages
        from remote-sim.
        * gdb.base/exprs.exp: Add h8300 xfails.
        * gdb.base/funcargs.exp: Likewise.
        * gdb.base/nodebug.exp: Likewise.
        * gdb.base/printcmds.exp: Likewise.
        * gdb.base/ptype.exp: Likewise.
        * gdb.base/setvar.exp: Handle sizeof (int) != 4 for h8300.  Add
        h8300 xfails.
        * gdb.base/return.exp: Handle float/double precision problems
        on the h8300.
        * gdb.base/funcargs.c: Explicitly make last constant argument to
        call_after_alloca_subr an unsigned long type.
        * gdb.base/return.c: Include stdio.h.
Testsuite work for the H8/300 -gstabs.  HMSE.