Merge "Import sources from xalan-tests xalan-j_2_7_3-rc10" am: 52bcda7324 am: 4ff52b81bf am: 9ac7a37dc9 am: 3e36dad3c7 am: 9025f8d04a

Original change: https://android-review.googlesource.com/c/platform/external/apache-xml/+/2643660

Change-Id: I9807b90e64b45f0d6855eb6400d2df39197ddc58
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>