- update to new upstream version 0.3.15 (jira#SLE-18269):
- Corrected mutliple security issues that existed if the tcsd is started by
root instead of the tss user. CVE-2020-24332, CVE-2020-24330, CVE-2020-24331
- Replaced use of _no_optimize with asm memory barrier
- Fixed multiple potential instances of use after free memory handling
- Removed unused global variables which caused build issue on some distros
- drop bsc1164472.patch: now contained in upstream tarball
- adjusted %setup macro invocation which seemed to be wrong