Revert "meson.build for sdl2 changed to allow non-Ascii characthers in file path"

This reverts commit 4591025e.

dependencies/subprojects/sdl2_image_windows/meson.build

 project('sdl2_image_windows', 'cpp')
 
-sdl2_main = declare_dependency(
-  link_args : '-L' + meson.current_source_dir() + '/lib -SDL2_image')
-
+cxx = meson.get_compiler('cpp')
 sdl2_image_windows_dep = declare_dependency(
-  dependencies : [sdl2_main],
+  dependencies : [cxx.find_library('SDL2_image', dirs : join_paths(meson.current_source_dir(), 'lib'))],
   include_directories : include_directories(join_paths('include', 'SDL2')))
-

dependencies/subprojects/sdl2_windows/meson.build

 project('sdl2_windows', 'cpp')
 
-
-sdl2_main = declare_dependency(
-  link_args : '-L' + meson.current_source_dir() + '/lib -lSDL2main')
-
-sdl2 = declare_dependency(
-  link_args : '-L' + meson.current_source_dir() + '/lib -lSDL2')
-
+cxx = meson.get_compiler('cpp')
 sdl2_windows_dep = declare_dependency(
-  dependencies : [sdl2_main, sdl2],
+  dependencies : [cxx.find_library('SDL2main', dirs : join_paths(meson.current_source_dir(), 'lib')), 
+                  cxx.find_library('SDL2', dirs : join_paths(meson.current_source_dir(), 'lib'))],
   link_args: ['-lmingw32'],
-  include_directories : include_directories(join_paths('include', 'SDL2')))
\ No newline at end of file
+  include_directories : include_directories(join_paths('include', 'SDL2')))