Log Message:
sysutils/syslog-ng*: Update to 3.16.1.

Features
- Telegram destination and $(urlencode) template function
- Error reporting on misspelled block args
- New ignore_tns_config Oracle SQL destination config option
- Per-source "src.host" and "src.sender" counters

Bugfixes
- Fix possible loss of log messages in the systemd-journal() source
- Fix file source location information in internal logs
- Fix SDATA deserialization (disk-buffer crash)
- Fix unaccepted embedded 'file' keyword (file source and destination)
- Fix memory leaks in appmodel and varargs
- Fix a bug in the old LogMessage deserialization
- Fix reading the output of the confgen program
- Add safer mem_zero() to secret-storage
- Fix undefined behavior in syslog-ng-ctl query
- Fix lloc tracking for multi line blockrefs
- Added missing 'else {};' to default-network-drivers() to forward
  unparsable messages
- Fix mixed linking
- Fix compilation of evtlog on FreeBSD
- Fix thread_id allocation for more than 32 CPUs (crash)
- Add safe logging of errno
- Fix warnings related to floating point operations
- Partial revert of plugin discovery to bring back valgrind
- Fix connection close in network sources
- Fix file deletion in the wildcard-file() source
- Disable the DNS cache if use-dns(no) is used
- Fix compiler error for gcc 4.4
- Fix emitted warnings due to -no-pie detection for gcc 4.4
- Fix date format in functional tests
- Dbld fixes
- Rename PAGESIZE variables to pagesize in secret-storage (compilation
  fix)
- Fix the lifetime of TLSContext to prevent crash on reload
- Fix reaping program() source and destination when a Java-based
  destination is used

Other changes
- Add debug message to program source/destination about successful
  start
- Report memory exhaustion errors during config parsing
- Improved debug logs
- Dbld coverage
- LogTransportMock enhancement
- Modify the license of loggen from GPL to LGPL
- Loggen refactor
- Update RPM generation
- Support ENABLE_EXTRA_WARNINGS with CMake
- Rewrite unit tests based on Criterion
- Lexer test coverage improvements
- preparation for 3.16 OSE rhel/packaging