Clear pipelie cache if geometry destroyed or buffer changed

Clear pipelie cache if geometry destroyed or buffer changed

We also cache pipeline cache the Render::Geometry by the raw pointer.
If someone use duplicated pointer, it might return invalid pipeline
with unmatched vertexInputState.

To avoid this issue, let we erase cache if Render::Geometry destroyed,
same as Render::Program

 - This is the commit message #2:

Reset cached pipeline if geometry buffer changed

Until now, we don't re-cache the geometry
if the vertex buffer added/removed, or data changed.

Since the vertex attribute might be changed if we try to use
same geometry, the rendering result
show some non-common results.

To fix this cache issue, let we ensure to reset the cached infomations
if the vertex buffer / indices buffer changed.

Change-Id: I0dc5b4fb6b0645d4b7763d7aa890d6ad946d54c6
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>