[PATCH] Add vscr register to 'list' of PowerPC vector registers.

[Paul Gilliam <pgilliam@us.ibm.com>]

The vscr regisgter was omitted from the if statement in rs6000-tdep.c that decides if a register is a vector register.
Consiquetly, it was not printed along with the other vector registers using the 'info vector' command.

Two patches follow:  the first fixes the problem with the least amount of fuss.

The second adds ppc_vscr_regnum to the gdbarch_tdep struct in ppc-tdep.h and then uses that.
This version was prompted by this comment in rs6000-tdep.c:
       /* FIXME: jimb/2004-07-15: when we have tdep->ppc_vscr_regnum,
          we can treat this more like the other cases.  */

Which should i commit?

---------------------------- take one---------------------------- 
2005-10-14  Paul Gilliam  <pgilliam@us.ibm.com>

        * rs6000-tdep.c (rs6000_register_reggroup_p): Add vscr to test for
        vector registers.

Index: rs6000-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/rs6000-tdep.c,v
retrieving revision 1.245
diff -r1.245 rs6000-tdep.c
1890a1891
>             || regnum == tdep->ppc_vrsave_regnum - 1 /* vscr */

---------------------------- take two---------------------------- 
2005-10-14  Paul Gilliam  <pgilliam@us.ibm.com>

        * ppc-tdep.c (struct gdbarch_tdep): Add ppc_vsr_regnum.
        * rs6000-tdep.c (init_sim_regno_table, rs6000_register_reggroup_p,
        rs6000_stab_reg_to_regnum, rs6000_dwarf2_reg_to_regnum): Use new
        ppc_vscr_regnum.  (rs6000_gdbarch_init): Initialize ppc_vscr_regnum.

Index: ppc-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/ppc-tdep.h,v
retrieving revision 1.47
diff -r1.47 ppc-tdep.h
170a171
>     int ppc_vscr_regnum;      /* Second to last AltiVec register */
Index: rs6000-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/rs6000-tdep.c,v
retrieving revision 1.245
diff -r1.245 rs6000-tdep.c
264,265d263
<       /* FIXME: jimb/2004-07-15: when we have tdep->ppc_vscr_regnum,
<          we can treat this more like the other cases.  */
267c265
<                      tdep->ppc_vr0_regnum + ppc_num_vrs,
---
>                      tdep->ppc_vscr_regnum,
1890a1889
>             || regnum == tdep->ppc_vscr_regnum
2106c2105
<         return tdep->ppc_vrsave_regnum - 1; /* vscr */
---
>         return tdep->ppc_vscr_regnum;
2138c2137
<         return tdep->ppc_vrsave_regnum - 1; /* vscr */
---
>         return tdep->ppc_vscr_regnum;
3243a3243
>       tdep->ppc_vscr_regnum = 103;
3247a3248
>       tdep->ppc_vscr_regnum = 151;