* [Companion] I18N:
* Introduce new Translations class to centralize all related functionality;
* Add ability to search multiple locations for .qm translation binaries (local folders, resources, system paths);
* Add ability to reload translations dynamically w/out application restart;
* Improve support for loading Qt translations (if available);
* [build][i18n] Look for and include pre-built Qt translations with other translation resources; Generate translations.qrc dynamically with rest of build files; Add EN "translation" file (simpler UI string edits and possible abstractions); Rename ZH translation file to be country-specific.
* [build] Centralize finding all the Qt bits into root CMakeLists; Make sure QT_QMAKE_EXECUTABLE is defined; Disable dysfunctional simulator installer script generation.
* Cosmetics (unused includes).
* [Companion] Make language options menu dynamic based on available translations, and always show native language name; Allow changing language of some elements w/out restarting (esp. menus/toolbar buttons); Simplify menus/actions/handlers for themes and icon sizes.
* [build] Better way to generate translations.qrc using input file again (previous method was generating new qrc for each reconfig); Make sure common library is linked to other modules which may need it; Remove unused script.
* [build][CMake] Use `find_package(Git)` to confirm existence before trying to use git for version stamp; Use friendlier detection of grep executable on Windows; Use "del" on Windows instead of "rm".
* [build][Windows] Include dirent and msinttypes headers in source tree.
* Remove grep dependency for lua exports generation
* Sneaky pythons hiding in code.
* [build] Change `git_id` macro to skip check if no git directory is present, also now fails gracefully; Fix `today` macro on Windows; Report git revision; Make sure QtSvg module is found.
* [TravisCI] Build using avr-gcc 4.9.2 (up from 4.8.2). Relies on https://github.com/opentx/opentx/pull/4169 . Fixes all linker warnings, makes clean build.
* [build] Add ARM/AVR compiler version check/display and a workaround for avr-gcc linker warnings when using WARNINGS_AS_ERRORS=true.
* [TravisCI] Enable -Werror on all build targets (WARNINGS_AS_ERRORS=true).
* [build] CMake script updates:
Enable WARNINGS_AS_ERRORS option for all targets (not just firmware);
Consolidate some C/CXX flag settings for firmware target, avoid duplication/redundancy;
All warning flags are now passed to linker (GCC only);
Add a "build report" for each main target showing compiler, flags, and defines, with verbosity controlled by new VERBOSE_CMAKELISTS option;
Added properties to PCB, TRANSLATIONS, and a few other options (makes option selector lists in cmake-gui);
Add macro for conditionally adding C++11 flag;
Silence CMake >3.0 warnings about CMP0054 policy not being set;
Reverts AVR linker -Werror workaround;
Misc. cleanup/consolidation.
* [build] More CMakeLists updates:
Silence superfluous "CRT_SECURE" series MSVC warnings;
Formalize finding pthread lib/dll on MSVC builds and fix some issues with install target script;
Add property string lists to more options;
Quotes some paths with possible spaces, & other minor cosmetics.
* [build] firmware/bootloader: Remove remaining CMake default compiler flags and add FIRMWARE_C[XX}_FLAGS[_DEBUG] options for user to specify additional flags. Also move ASM language call to silence CMake warning w/MSVC.
* [build] Workaround bogus "uninitialized" warnings from AVR linker.
* [tests] Add custom printer for less verbose gtest output (use --verbose option to revert to gtest default).
* [build] Use less verbose CMake output for TravisCI builds. Formalize search for gtest code and enable gtests target on WIN32-GCC. Minor language fix.
* [Windows][MinGW] Update some WIN32 macro checks in source code to be MSVC-specific (not needed for GCC-based builds).
* [build] CMakeLists updates:
Adjust for Windows MinGW builds: now fully compatible with Qt5.5+ and MinGW-w64 toolchain (included in Qt installs);
Add option to specify path to required libraries/includes (instead of hard-coding `c:\programs`);
Add package check for Python and use found executable name;
Remove custom FindSdl package handler in favor of stock (and improved) CMake one (still works with Windows);
Do not force SIMU_AUDIO and LUA_COMPILER in SIMU builds (leave it up to user);
Add SIMU_LUA_COMPILER option specifically for SIMU builds (default = ON);
* [build][Windows] Rewrite/Fix Windows Companion `install` target, with two options:
a) just copy supporting Qt and c++ DLLs to build folder so programs can be quickly be run from there (this is default and similar to the old behavior);
b) full installation to CMAKE_INSTALL_PREFIX path, including all binaries, supporting DLLs, language files, and OTx utilities.
Option b) can be selected with new WIN_DO_FULL_INSTALL parameter;
Also cleans up the Linux install a bit and consolidates the OS X parts;
* [simulator][Windows] Add option to build Windows simulator with system console/terminal enabled (both standalone and when launched from Companion). Mostly useful for debug as it gives output messages much sooner in the startup process than the current debug console. Also helpful because you don't have to open it manually on every launch, and it remembers last window position and size. Possible candidate for a user-selectable runtime option in the future.
* [Windows] Fix MSVC build issues.
* [build] More build fixes:
Use a customized FindSDL.cmake script again due to bugs and deficiencies in the official version (based on script from CMake v3.7);
Fixes missing SDL DLL error in NSIS installer);
Use string for Timers option (checkbox in GUI is confusing);
Remove an unused variable.
* [simu][Windows] Fix f_getcwd() cutting off too many characters (fixes SD browser interactions).
* Add cmake configuration for Libfox.
CMake on OS X does not find libfox in the homebrew location otherwise
* Fix findpackage(Fox) for case sensitive systems
