Results: Implement namespaced, type-safe results.

Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
  abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
  with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).

stratosphere/ams_mitm/source/fs_mitm/fsmitm_service.cpp

@@ -92,7 +92,7 @@ Result FsMitmService::OpenHblWebContentFileSystem(Out<std::shared_ptr<IFileSyste
         out_fs.ChangeObjectId(sd_fs.s.object_id);
     }
 
-    return ResultSuccess;
+    return ResultSuccess();
 }
 
 Result FsMitmService::OpenFileSystemWithPatch(Out<std::shared_ptr<IFileSystemInterface>> out_fs, u64 title_id, u32 filesystem_type) {
@@ -163,7 +163,7 @@ Result FsMitmService::OpenSdCardFileSystem(Out<std::shared_ptr<IFileSystemInterf
         out_fs.ChangeObjectId(sd_fs.s.object_id);
     }
 
-    return ResultSuccess;
+    return ResultSuccess();
 }
 
 Result FsMitmService::OpenSaveDataFileSystem(Out<std::shared_ptr<IFileSystemInterface>> out_fs, u8 space_id, FsSave save_struct) {
@@ -222,7 +222,7 @@ Result FsMitmService::OpenSaveDataFileSystem(Out<std::shared_ptr<IFileSystemInte
             out_fs.ChangeObjectId(sd_fs.s.object_id);
         }
 
-        return ResultSuccess;
+        return ResultSuccess();
     }
 }
 
@@ -272,7 +272,7 @@ Result FsMitmService::OpenBisStorage(Out<std::shared_ptr<IStorageInterface>> out
         out_storage.ChangeObjectId(bis_storage.s.object_id);
     }
 
-    return ResultSuccess;
+    return ResultSuccess();
 }
 
 /* Add redirection for RomFS to the SD card. */
@@ -299,7 +299,7 @@ Result FsMitmService::OpenDataStorageByCurrentProcess(Out<std::shared_ptr<IStora
                 out_storage.ChangeObjectId(s.s.object_id);
             }
             out_storage.SetValue(std::move(cached_storage));
-            return ResultSuccess;
+            return ResultSuccess();
         }
     }
 
@@ -326,7 +326,7 @@ Result FsMitmService::OpenDataStorageByCurrentProcess(Out<std::shared_ptr<IStora
         }
     }
 
-    return ResultSuccess;
+    return ResultSuccess();
 }
 
 /* Add redirection for System Data Archives to the SD card. */
@@ -355,7 +355,7 @@ Result FsMitmService::OpenDataStorageByDataId(Out<std::shared_ptr<IStorageInterf
                 out_storage.ChangeObjectId(s.s.object_id);
             }
             out_storage.SetValue(std::move(cached_storage));
-            return ResultSuccess;
+            return ResultSuccess();
         }
     }
 
@@ -382,5 +382,5 @@ Result FsMitmService::OpenDataStorageByDataId(Out<std::shared_ptr<IStorageInterf
         }
     }
 
-    return ResultSuccess;
+    return ResultSuccess();
 }