p7zip: Update to 17.03

p7zip: Update to 17.03

- Update p7zip from 16.02 (Jul 2016) to 17.03 (Dec 2020)
- Version 16.02 was the last version by the previous dev team.
	A fork was created in May 2020 with version 17.01
- Rootfile updated
- Changelog
	Version 17.03
	=============
	  - add zstd to zip
	  - add hash algorithm
	    - XXHASH32
	    - XXHASH64
	    - MD2
	    - MD4
	    - MD5
	    - sha384
	    - sha512
	  - add Lzfse to dmg
	  - add lz5 to 7z
	  - add lizard to 7z
	  - update lz4 to v1.9.3
	  - add brotli to 7z
	  - update cmake build
	  - fix xz crc64 error
	  - use system local to select OEM code
	  - add rpm install
	  - fix lzma2 and flzma22 call the same algorithm
	  - add 7zr build
	  - fix tar format link file compress and decompress
	Version 17.02
	=============
	  - p7zip 17.02 is more like 7zip 17.01(only 7za and 7z),The difference from 7zip 17.01
	    and older version p7zip is the following description
	  - Supports Fast lzma2 1.0.1 compression method
	  - Update Zstd method to 1.4.5
	  - Add zstd method parameters in 7z format
	    ZSTD parameters NEW name:
	         strategy -> strat
	         fast -> fast
	         long -> long
	         WindowLog -> wlog
	         HashLog -> hlog
	         ChainLog -> clog
	         SearchLog -> slog
	         MinMatch -> slen
	         TargetLen -> tlen
	         OverlapLog -> ovlog
	         LdmHashLog -> ldmhlog
	         LdmSearchLength -> ldmslen
	         LdmBucketSizeLog -> ldmblog
	         LdmHashRateLog -> ldmhevery
	  - Fix symlink files contained inside tar and squashfs as regular file
	  - Add lz4 and Zstd decompress method to squashfs
	Version 17.01
	=============
	  - Fix BUG CVE-2018-10115
	  - Fix BUG CVE-2018-5996
	  - Fix BUG CVE-2017-17969
	  - Fix BUG CVE-2016-9296
- The bug fixes in version 17.01 address the same CVE bugs as the
	p7zip-16.02-consolidated_fixes-1.patch Therefore this patch is no longer needed
- The patches for CVE-2016-2334 & 2335 were for versions before 16.00 so are no longer needed

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