Bump verson to 1.3.6.3
Issue 48989 - Overflow in counters and monitor
Issue 49095 - targetattr wildcard evaluation is incorrectly case sensitive
Issue 49177 - rpm would not create valid pkgconfig files
Issue 49176 - Remove tcmalloc restriction from s390x
Issue 49157 - ds-logpipe.py crashes for non-existing users
Issue 49065 - dbmon.sh fails if you have nsslapd-require-secure-binds enabled
Issue 49095 - Fix double-free in _cl5NewDBFile() error path
(cherry picked from commit 58a8b17c28dcb605161b3fd733bc25ac17b85503)