[xaprepare] Make 7zip work with "dangerous" symlinks in ZIPs

[grendello]

From time to time, 7zip invoked by xaprepare with an error similar to:

ERROR: Dangerous symbolic link path was ignored : android-ndk-r26c/toolchains/llvm/prebuilt/linux-x86_64/lib/python3.10/site-packages/lldb/lldb-argdumper : ../../../../bin/lldb-argdumper
ERROR: Dangerous symbolic link path was ignored : android-ndk-r26c/toolchains/llvm/prebuilt/linux-x86_64/lib/python3.10/site-packages/lldb/_lldb.cpython-310-x86_64-linux-gnu.so : ../../../liblldb.so

The problem is that this symlink is not a dangerous one, as it doesn't
point outside the archived directory tree.

This happened on mac, Windows and Linux alike.

Try to work around the issue by using an undocumented -snld 7zip option
when extracting ZIP archives. Since the option is understood only from
7-Zip 20.x, check the version before using the argument.

[jonpryor]

Looks like our 7z doesn't like it?

[7zip] extracting archive
[7zip] log file: bin/BuildRelease/prepare-20240219T092131.7zip-extract.xamarin-android-toolchain-L_17.0.6-7.1.0.7z.log
stderr | 
stderr | 
stderr | Command Line Error:
stderr | Incorrect switch postfix:
stderr | -snld
Elapsed: 00:00:00.0095147

or we need to specify -snld "elsewhere" on the command-line?

[grendello]

Yeah, the version we have doesn't like the d in -snld it seems. I need to work on it a bit, because version detection for 7z doesn't quite work it seems and we need to add the switch based on 7z version. Also, the version we use from nuget doesn't seem to need the switch, it doesn't appear to have the dangerous symlink detection code that trips up the newer versions.