* Combine client and server man pages.
  * Update unit test options and available databases in man page.
  * Add `--worldname` to man page.
  * Fix a bunch of places where `"Minetest"` was used directly instead of `PROJECT_NAME`.
  * Disable server build by default on all operating systems.
  * Make `ENABLE_FREETYPE` not fail if FreeType isn't found.
  * Enable LevelDB, Redis, and FreeType detection by default.
  * Remove the `VERSION_PATCH_ORIG` hack.
  * Add option to search for and use system JSONCPP.
  * Remove broken LuaJIT version detection.
  * Rename `DISABLE_LUAJIT` to `ENABLE_LUAJIT`.
  * Rename `minetest_*` variables in `version.{h,cpp}` to `g_*`.
  * Clean up style of CMake files.

* Remove --enable-unittests and --disable-unittests and add --do-unittests function
* --do-unittests function will exit 0 on success.
* minetest and minetestserver binaries are launched with --do-unittests in travis build.

Add ZLIBWAPI_DLL and LEVELDB_DLL CMake options Remove legacy MINGWM10_DLL CMake option Update 32-bit buildbot (OpenAL updated, zlib updated) Change build directory for buildbots to '_build' to prevent removal of Android build files Use -win64 suffix for 64-bit Windows builds Fixes #1476

Add lag reporting to masterserver (average dtime)
StyledWriter  -> FastWriter in masterserver announce

Add engine.gettext() and remove gettext() calls in guiFormspecMenu.cpp