symbols.c:1057:28: portability: Shifting signed 32-bit value by 31 bits
  is implementation-defined behaviour. See condition at line 1049.
  [shiftTooManyBitsSigned]
        radio_groups |= (1 << (tmp.uval - 1));
                           ^
symbols.c:1049:41: note: Assuming that condition 'tmp.uval>32' is not redundant
        if ((tmp.uval < 1) || (tmp.uval > XkbMaxRadioGroups))
                                        ^
symbols.c:1057:28: note: Shift
        radio_groups |= (1 << (tmp.uval - 1));
                           ^
symbols.c:1057:28: warning: Either the condition 'tmp.uval>32' is redundant
  or there is signed integer overflow for expression '1<<(tmp.uval-1)'.
  [integerOverflowCond]
        radio_groups |= (1 << (tmp.uval - 1));
                           ^
symbols.c:1049:41: note: Assuming that condition 'tmp.uval>32' is not redundant
        if ((tmp.uval < 1) || (tmp.uval > XkbMaxRadioGroups))
                                        ^
symbols.c:1057:28: note: Integer overflow
        radio_groups |= (1 << (tmp.uval - 1));
                           ^

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>