arb_separate_shader_object: Silence GCC maybe-uninitialized warnings.

ValidateProgramPipeline.c:345:25: warning: 'prog_tes' may be used uninitialized in this function [-Wmaybe-uninitialized]
  build_and_validate_pipe(pipe, true,
                         ^
ValidateProgramPipeline.c:345:25: warning: 'prog_tcs' may be used uninitialized in this function [-Wmaybe-uninitialized]
ValidateProgramPipeline.c:383:26: warning: 'prog_vs_gs' may be used uninitialized in this function [-Wmaybe-uninitialized]
   build_and_validate_pipe(pipe, false,
                          ^
ValidateProgramPipeline.c:345:25: warning: 'prog_gs' may be used uninitialized in this function [-Wmaybe-uninitialized]
  build_and_validate_pipe(pipe, true,
                         ^

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
results.py: remove unused import

Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>
results.py: Allow partially completed runs to be summarized

This restores the ability to create a summary from a partial set of
runs by using the same functionality as resume.

Signed-off-by: Dylan Baker <dylanx.c.baker@intel.com>