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SETools v4 is a rewrite of SETools in Python, details refer to:
https://github.com/TresysTechnology/setools/wiki/Changes-Since-SETools-v3



Changes for upreving:
* removed setools_3.3.8.bb and all useless patch
* add patches to fix cross-compiling issues:
  - setools4-fixes-for-cross-compiling.patch
  - setools4-fix-cross-compiling-errors-for-powerpc-mips.patch
Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>

Per discussion w/ Wenzong, added meta-python as a dependency and enabled
the RDEPENDS within the new setools_4.1.1.bb
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>