Improve backup & wipe exclusion handling

Rename twrpDU.* to exclude.*
Remove global variable for du and replace with partition specific
variables.
Use separate exclusion lists for backups and wiping.
Clean up some includes
Fix some parenthesis in twrp.cpp that I messed up.

Note: twrpTarMain command line utility compiles but probably does
not work correctly yet due to not properly setting part_settings

Change-Id: Idec9c3e6a8782ba53f3420fa79ba33394f4f85fb

partitionmanager.cpp

@@ -40,7 +40,7 @@
 #include "twrp-functions.hpp"
 #include "fixContexts.hpp"
 #include "twrpDigest.hpp"
-#include "twrpDU.hpp"
+#include "exclude.hpp"
 #include "set_metadata.h"
 #include "tw_atomic.hpp"
 #include "gui/gui.hpp"
@@ -835,9 +835,10 @@ int TWPartitionManager::Run_Backup(bool adbbackup) {
 	int total_time = (int) difftime(total_stop, total_start);
 
 	uint64_t actual_backup_size;
-	if (!adbbackup)
-		actual_backup_size = du.Get_Folder_Size(part_settings.Backup_Folder);
-	else
+	if (!adbbackup) {
+		TWExclude twe;
+		actual_backup_size = twe.Get_Folder_Size(part_settings.Backup_Folder);
+	} else
 		actual_backup_size = part_settings.file_bytes + part_settings.img_bytes;
 	actual_backup_size /= (1024LLU * 1024LLU);