build refact

[lysevi]

• - travis.cl refact ( https://github.com/neovim/neovim/blob/master/.travis.yml )
• - CLANG_SANITIZER(LLVM_SYMBOLIZER, llvm-symbolizer)
• - optional build.
  • - unit tests with optional depend. (boost.unit_tests).
  • - benchmarks.
  • - network with optional depend. (boost.asio boost.unit_tests).
• - project can using as sub cmake-project.
• - all includes in code must be absolute.
• - libdariadb is dynamic lib.
• - new names
  • - lib dariadb
  • - lib dariadb-client
  • - lib dariadb-server
  • - lib dariadb-net
  • - dariad - server
• - sanitizers
• - build options starts with prefix DARIADB_
• - if SYSTEM_JEMALLOC=OFF
• - option: use system sqlite.
• - libdariadb is dynamic lib with install script.
• - update readme.
  • - available building options.
• - deb
• - github organisation 'dariadb'
  • - all CI works with new repo in org.
• - update changelog