[PATCH] msxml3/tests: add some tests for the non-standard MSXML regex escape sequences

[Damjan Jovanovic]

Adds tests for all non-standard escaped sequences used by MSXML I could
find, such as "$" (bug 29685), "\uXXXX" (bug 43581) and 13 others.

A patch to libxml2 implementing all those sequences is already available:
https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/116

Signed-off-by: Damjan Jovanovic 
---
 dlls/msxml3/tests/schema.c | 175 +++++++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)