Fix Project Scanning (#746)

Removed dmon, and replaced with logic that works across Linux, Mac, FreeBSD and Windows. Have tested on all platforms, and seems to work.

Co-authored-by: Jan200101 <sentrycraft123@gmail.com>

meson.build

@@ -69,9 +69,6 @@ endif
 if not get_option('source-only')
     libm = cc.find_library('m', required : false)
     libdl = cc.find_library('dl', required : false)
-    threads_dep = dependency('threads')
-
-
     lua_fallback = ['lua', 'lua_dep']
     lua_quick_fallback = []
     if get_option('wrap_mode') == 'forcefallback'
@@ -97,7 +94,7 @@ if not get_option('source-only')
         default_options: ['default_library=static']
     )
 
-    lite_deps = [lua_dep, sdl_dep, freetype_dep, pcre2_dep, libm, libdl, threads_dep]
+    lite_deps = [lua_dep, sdl_dep, freetype_dep, pcre2_dep, libm, libdl]
 endif
 #===============================================================================
 # Install Configuration
@@ -151,7 +148,6 @@ configure_file(
 )
 
 if not get_option('source-only')
-    subdir('lib/dmon')
     subdir('src')
     subdir('scripts')
 endif