signed, unsigned and straight char.
(padding_char, padding_short, padding_int, padding_long,
padding_long_long, padding_float, padding_double,
padding_long_double): New global variables.
(fill, fill_structs): New functions.
* gdb.base/sizeof.exp: Check for signed and unsigned char. Check
for correctly sized writes. Update copyright.
(get_valueof): New procedure.
(get_sizeof): Call get_valueof.
(check_valueof): New procedure.
(check_padding): New procedure.
* lib/gdb.exp (gdb_skip_float_test): New proc. Skip test if
no floating point support.
(gdb_skip_stdio_test): New proc. Skip test if no stdio support.
* gdb.base/call-ar-st.exp: Use above procs to skip tests.
* gdb.base/call-rt-st.exp: Ditto.
* gdb.base/call-strs.exp: Ditto.
* gdb.base/sizeof.exp (check_sizeof): Skip if no printf support.
* gdb.base/varargs.exp: Skip entire test if no printf support.
* gdb.base/ending-run.exp (Step to return): Skip if no printf supt.
* gdb.base/shlib-call.exp: Skip several tests if no printf support.
