Replace Reproc (#535)

Replace reproc with simpler non-dependency-based process API.

meson.build

@@ -53,20 +53,7 @@ if not get_option('source-only')
     pcre2_dep = dependency('libpcre2-8')
     freetype_dep = dependency('freetype2')
     sdl_dep = dependency('sdl2', method: 'config-tool')
-    reproc_dep = dependency('reproc', fallback: ['reproc', 'reproc_dep'],
-        default_options: [
-            'default_library=static', 'multithreaded=false',
-            'reproc-cpp=false', 'examples=false'
-        ]
-    )
-
-    lite_deps = [lua_dep, sdl_dep, reproc_dep, pcre2_dep, libm, libdl, freetype_dep, threads_dep]
-
-    if host_machine.system() == 'windows'
-        # Note that we need to explicitly add the windows socket DLL because
-        # the pkg-config file from reproc does not include it.
-        lite_deps += meson.get_compiler('c').find_library('ws2_32', required: true)
-    endif
+    lite_deps = [lua_dep, sdl_dep, freetype_dep, pcre2_dep, libm, libdl, threads_dep]
 endif
 #===============================================================================
 # Install Configuration