Third-party: fix Asio include paths

third_party/asio.lua

@@ -5,7 +5,7 @@ project("asio")
   language("C++")
 
   includedirs({
-    "asio/include",
+    "third_party/asio/include",
   })
 
   defines({
@@ -20,7 +20,7 @@ project("asio")
   filter({})
 
   files({
-    "asio/asio/include/asio.hpp",
+    "third_party/asio/include/asio.hpp",
   })
 
   warnings("Off")

third_party/mspack.lua

@@ -12,9 +12,6 @@ project("mspack")
   includedirs({
       "mspack",
   })
-  sysincludedirs({
-      "mspack",
-  })
   files({
       "mspack/logging.cc",
       "mspack/lzxd.c",

third_party/zarchive.lua

@@ -8,8 +8,6 @@ project("zarchive")
   })
   includedirs({
     "zarchive/include",
-  })
-  sysincludedirs({
     "zstd/lib",
   })
   files({