Add missing libewf_extent_get_values() to support multi-extent files (and minor fix for MSVSCPP project)

[datasynergyuk]

Add missing libewf_extent_get_values() to support multi-extent files. This will allow existing code to stop using deprecated methods: get_media_data_offset()/get_media_data_size(). An extra bonus is that data_flags comes back per-extent, so per-extent sparse detection now becomes possible

Also fixed "LINK : fatal error LNK1181: cannot open input file '..\release\bzip2.lib'" in MSVSCPP build. Fix is to add 'libbz2.def' module defintion (.def) file so that the MSVSCPP project will emit required LIB file. Also modified project output filename to match bzip2/libbzip2 default of "LIBBZ2.dll". This is a partial fix for just the DLL name issue. The full fix would be to rename the project "LIBBZ2", however, this may have other implications so I have not touched this.

[joachimmetz]

Thanks for the proposed changes. I'll take a closer look when time permits. Note that I'll not merge the changes to the visual studio files.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 39.81%. Comparing base (7512e03) to head (57b6e46).

Files with missing lines	Patch %	Lines
libewf/libewf_extent.c	0.00%	24 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #218      +/-   ##
==========================================
+ Coverage   39.47%   39.81%   +0.33%     
==========================================
  Files         101      101              
  Lines       41381    40928     -453     
  Branches     9538     9543       +5     
==========================================
- Hits        16335    16294      -41     
+ Misses      21595    21203     -392     
+ Partials     3451     3431      -20     

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[datasynergyuk]

Thank you. Please can I ask why you will not merge the changes to the visual studio files? Is this because you think they are wrong, you can't test them or because you are not worried about Visual Studio compatibility? It would be helpful to know for future PR's. For what it is worth, it is a simple fix required due to recent changes in BZip2

[joachimmetz]

They are autogenerated with https://github.com/libyal/vstools from the autoconf/make files.

Also note that bzip2 support is early WIP

[datasynergyuk]

Ok. Thank you for explaining. I will look into vstools and see if my fix is applicable there.