Support libxml2>=2.14?

[ChristianRothQC]

libxml2 versions >=2.14 (March 2025) switched from libxml2.so.2 -> libxml2.so.16 and libxml2.so.2 is no longer available on newer systems.

Would it make sense to update to libxml2.so.16. Recent distributions (such as ubuntu questing/resolute) now ship the newer libxml2.so.16.

https://newreleases.io/project/gnome-gitlab/GNOME/libxml2/release/v2.14.0

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https://github.com/ibmdb/db2drivers/blob/main/clidriver/v12.1.4/linuxx64_odbc_cli.tar.gz

greadelf -d clidriver/lib/libdb2.so | grep NEEDED

 0x0000000000000001 (NEEDED)             Shared library: [libcrypt.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libpam.so.0]
 0x0000000000000001 (NEEDED)             Shared library: [libxml2.so.2]
 0x0000000000000001 (NEEDED)             Shared library: [libstdc++.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
 0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
 0x0000000000000001 (NEEDED)             Shared library: [ld-linux-x86-64.so.2]