Fix many svace issues at dali-toolkit (integer overflow + etc)

Fix many svace issues at dali-toolkit (integer overflow + etc)

This is a combination of 3 commits.

Let we remove many cases of dali-toolkit when we can be call 0u - 1u, which is undefined behavior.

Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>
(Scene3D) Fix svace issue : convert uint32_t to std::streamoff + minor

Fix svace issue when we try to convert from 32bit unsigned integer
to (might) 64bit signed integer.

+

Fix the name of function collision issue

Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>
Fix svace issue : Avoid to divide by zero cases

Change-Id: If11884693253cd86f89cb98704e93473166faca1
Signed-off-by: Eunki, Hong <eunkiki.hong@samsung.com>