New upstream version 3.15.3

diff --cc .tag
index 37e47a8a9254db9819232d5df97de07ac3509b0f,6828f88dcb0e88b8cd738ad6044ce74d7a9a13c8..66fca389fbec9b4f11dc26a20684fbc18c98eefc
--- 1/.tag
--- 2/.tag
+++ b/.tag
@@@ -1,1 -1,1 +1,1 @@@
- 6e4ffdfb460c41e8f671e54b6705b3c9a45efcca
 -$Format:%H$
++a595d5bcb6f13f4ea4080b694682a5ae43e2f769