sysutils/syslog-ng*: Update to 3.14.1.

Features
- Password protected ssl keys
- Add OpenBSD module to system() source
- Add Ubuntu Trusty support to Docker build

Bugfixes
- Fix increased memory usage during saving disk-buffer
- Fix maximum record length limitations of disk-buffer
- Fix a memory leak in cfg-lexer
- Fix some issues found by pylint in python module
- Fix a crash due to a race condition in kv-parser()
- Fix a crash due to a race condition in file() destination
- Fix deprecated API usage in python module tests
- Fix a race condition in internal() source
- Fix a locale issue in merge-grammar python tool
- Fix compile problems with autotools when '--disable-all-modules'
  used
- Fix a file descriptor leak in persist-state
- Fix a file descriptor leak in pseudofile()
- Fix memory/fd leaks in loggen tool
- Fix compile problems on Fedora, RHEL6, CentOS6 and SUSE based
  platforms
- Fix a crash when large variety of keys added to messages
- Fix compile problems when PATH_MAX not defined
- Fix integer overflow problems in grammar
- Fix a memory leak in filter()
- Fix memory leak of persist-name() option
- Fix message corruption caused by a bug in the subst() rewrite rule
- Fix silently dropped messages in elasticsearch2() when sending in
  bulk mode
- Fix broken disk-buffer() support in elasticsearch2()
- Fix Hy support in python module
- Fix an event scheduler related crash during reloading syslog-ng
- Fix a crash with SIGBUS when persist file cannot grow

Other changes
- Improve error reporting in "block" definitions in config
- Add warning message when disk-buffer() directory is changed in
  configuration
- Syslog-ng debun improvements
- Refactor in rewrite() module init
- Missing child program (exit status 127) handling is changed in
  program() destination:
- stopping destination instead of polling for the child program
- Refactor in filter() module
- Improve thread synchronization in mainloop and refactor
- Adapted json-c v0.13 API changes to json-parser
- Add filters as selectors in contextual data

(fhajny)