Log Message:
meson: Update to 0.52.0

Changes:

* Gettext targets are ignored if gettext is not installed
* Support taking environment values from a dictionary
* alias_target
* Enhancements to the pkg_config_path argument
* The meson test program now accepts an additional "--gdb-path" \ 
argument to specify the GDB binary
* Better support for illumos and Solaris
* Splitting of Compiler.get_function_attribute('visibility')
* Clang-tidy target
* Add blocks dependency
* Meson's builtin b_lundef is now supported on macOS
* Compiler and dynamic linker representation split
* Add depth option to wrap-git
* Enhancements to the source_set module
* added --only test(s) option to run_project_tests.py
* Experimental Webassembly support via Emscripten
* Version check in find_program()
* Added vs_module_defs to shared_module()
* Improved support for static libraries
* Enhancements to the kconfig module
* Added include_type kwarg to dependency
* Enhancements to configure_file()
* Projects args can be set separately for build and host machines (potentially \ 
breaking change)
* Allow checking if a variable is a disabler
* gtkdoc-check support
* gnome.gtkdoc() returns target object
* Dist is now a top level command