DPC++ daily 2021-09-23

[clang-offload-extract] Ignore zero padding in .tgting section (#4622)

This patch changes clang-offload-extract to ignore zero padding
when reading .tgtimg section contents. Such padding can be added
to the section by (msvc) linker.

Signed-off-by: Sergey Dmitriev <serguei.n.dmitriev@intel.com>