Fixes #2216 InstallShield .Z package decompression

[baxtor]

Reverse engineered pascal code from "STIX", adjusted only a few line of code.
The blast implementation of OpenRA works perfectly with it.
Filename hashing should be removed 'cause of duplicate filenames in nested folders.

[Mailaender]

ProTip: If you write "Fixes #2216" or "Closes #2216" in the commit comment the bug will automatically be closed once this is merged.

[baxtor]

@Mailaender changed title message

[Mailaender]

👎 Does not work.

System.IO.EndOfStreamException: Failed to read past end of stream.
  at System.IO.BinaryReader.FillBuffer (Int32 numBytes) [0x0006d] in /home/abuild/rpmbuild/BUILD/mono-3.0.7/mcs/class/corlib/System.IO/BinaryReader.cs:144 
  at System.IO.BinaryReader.ReadUInt32 () [0x00000] in /home/abuild/rpmbuild/BUILD/mono-3.0.7/mcs/class/corlib/System.IO/BinaryReader.cs:556 
  at OpenRA.FileFormats.InstallShieldPackage.ParseFile (System.IO.BinaryReader reader) [0x00009] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs:76 
  at OpenRA.FileFormats.InstallShieldPackage.ParseDirectory (System.IO.BinaryReader reader) [0x00031] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs:69 
  at OpenRA.FileFormats.InstallShieldPackage..ctor (System.String filename, Int32 priority) [0x000d4] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/InstallShieldPackage.cs:53 
  at OpenRA.FileFormats.FileSystem.OpenPackage (System.String filename, System.String annotation, Int32 order) [0x0008b] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/FileSystem.cs:75 
  at OpenRA.FileFormats.FileSystem+<Mount>c__AnonStorey15.<>m__16 () [0x00000] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/FileSystem.cs:95 
  at OpenRA.FileFormats.FileSystem.Mount (System.String name, System.String annotation) [0x000ac] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/FileSystem.cs:101 
  at OpenRA.FileFormats.FileSystem.Mount (System.String name) [0x00001] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/Filesystem/FileSystem.cs:82 
  at OpenRA.FileFormats.InstallUtils.ExtractFromPackage (System.String srcPath, System.String package, System.String[] files, System.String destPath, System.Action`1 onProgress, System.Action`1 onError) [0x00063] in /home/matthias/Projekte/OpenRA/OpenRA.FileFormats/InstallUtils.cs:49 
  at OpenRA.Mods.D2k.Widgets.Logic.D2kInstallFromCDLogic+<Install>c__AnonStorey3.<>m__1D (System.Object _) [0x00000] in <filename unknown>:0 
  at System.Threading.Thread.StartInternal () [0x0002b] in /home/abuild/rpmbuild/BUILD/mono-3.0.7/mcs/class/corlib/System.Threading/Thread.cs:736 

[Mailaender]

No, it was my code that is crap. In fact this works. 👍

[Mailaender]

Mailaender@0d05861 with @baxtor's help will also enable the GUI properly for this. Part of my long-term branch addressing #2566.