[4.0] WIP: Replace bzip2 with pbzip2 to decompress *.tar.bz2 file in parallel.

[4.0] WIP: Replace bzip2 with pbzip2 to decompress *.tar.bz2 file in parallel.

This commit is to decompress the file such as *.tar.bz2 on multi-core system.
The pbzip2 uses the bzip2 library (e.g., libbz2.so) to be compatible with bzip2.
The difference is ELF file itself between bzip2 and pbzip2 package.
The pbzip2 includes 1) parallel implementation and 2) block-sorting compression.

* reference: https://github.com/rpm-software-management/rpm/issues/113

Change-Id: I66e4439420015bd3e0a46f58414ec85a488ca7b3
Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>