Nick Wellnhofer 6e3a2ac660 xinclude: Rework xml:base fixup
The xml:base fixup was broken in more complex cases.

Also avoid parsing and building the included URI multiple times.
2023-12-25 23:38:40 +01:00
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2023-12-25 23:38:40 +01:00
2023-12-25 23:38:40 +01:00