Only initialize and gather delay accounting data if a related column is enabled

Avoid creating and communicating over a netlink socket by default, which
triggers cap_net_admin checks as root.
diff --git a/linux/LinuxProcess.h b/linux/LinuxProcess.h
index 719a4e9..2e9a9d1 100644
--- a/linux/LinuxProcess.h
+++ b/linux/LinuxProcess.h
@@ -18,16 +18,17 @@
 #include "Settings.h"
 
 
-#define PROCESS_FLAG_LINUX_IOPRIO   0x00000100
-#define PROCESS_FLAG_LINUX_OPENVZ   0x00000200
-#define PROCESS_FLAG_LINUX_VSERVER  0x00000400
-#define PROCESS_FLAG_LINUX_CGROUP   0x00000800
-#define PROCESS_FLAG_LINUX_OOM      0x00001000
-#define PROCESS_FLAG_LINUX_SMAPS    0x00002000
-#define PROCESS_FLAG_LINUX_CTXT     0x00004000
-#define PROCESS_FLAG_LINUX_SECATTR  0x00008000
-#define PROCESS_FLAG_LINUX_LRS_FIX  0x00010000
-#define PROCESS_FLAG_LINUX_CWD      0x00020000
+#define PROCESS_FLAG_LINUX_IOPRIO    0x00000100
+#define PROCESS_FLAG_LINUX_OPENVZ    0x00000200
+#define PROCESS_FLAG_LINUX_VSERVER   0x00000400
+#define PROCESS_FLAG_LINUX_CGROUP    0x00000800
+#define PROCESS_FLAG_LINUX_OOM       0x00001000
+#define PROCESS_FLAG_LINUX_SMAPS     0x00002000
+#define PROCESS_FLAG_LINUX_CTXT      0x00004000
+#define PROCESS_FLAG_LINUX_SECATTR   0x00008000
+#define PROCESS_FLAG_LINUX_LRS_FIX   0x00010000
+#define PROCESS_FLAG_LINUX_CWD       0x00020000
+#define PROCESS_FLAG_LINUX_DELAYACCT 0x00040000
 
 
 /* LinuxProcessMergedCommand is populated by LinuxProcess_makeCommandStr: It