bzip2: Update to 1.0.8

bzip2: Update to 1.0.8

- Update from 1.0.6 to 1.0.8
- Update of rootfile
- Changelog
   1.0.8 (13 Jul 19)
    * Accept as many selectors as the file format allows.
      This relaxes the fix for CVE-2019-12900 from 1.0.7
      so that bzip2 allows decompression of bz2 files that
      use (too) many selectors again.
    * Fix handling of large (> 4GB) files on Windows.
    * Cleanup of bzdiff and bzgrep scripts so they don't use
      any bash extensions and handle multiple archives correctly.
    * There is now a bz2-files testsuite at
      https://sourceware.org/git/bzip2-tests.git
   1.0.7 (27 Jun 19)
    * Fix undefined behavior in the macros SET_BH, CLEAR_BH, & ISSET_BH
    * bzip2: Fix return value when combining --test,-t and -q.
    * bzip2recover: Fix buffer overflow for large argv[0]
    * bzip2recover: Fix use after free issue with outFile (CVE-2016-3189)
    * Make sure nSelectors is not out of range (CVE-2019-12900)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>