only register the sparse package on win11 or later, and handle all exceptions.
* update to the svn 1.15.x branch
apply the e_capi patch
Update to OpenSSL 3.5.4
Patch from Denis Kovalchuk (https://groups.google.com/g/tortoisesvn-dev/c/gaHZQnMbjro/m/1DdA75BfBwAJ):
Register the win11 explorer context menu via active setup for every user
do not cache the bitmap handles because that leads to handles being destroyed multiple times, which leads to handle leaks
clear bitmap handles even if the API fails to avoid handle leaks