rename headers to match style

Moving headers from ".h" to ".hpp"

Reworked the header inclusion a bit so that host-ipmid is treated as a
library, and local headers aren't.

renamed apphandler.h => apphandler.hpp
renamed chassishandler.h => chassishandler.hpp
renamed globalhandler.h => globalhandler.hpp
renamed sensorhandler.h => sensorhandler.hpp
renamed storageaddsel.h => storageaddsel.hpp
renamed storagehandler.h => storagehandler.hpp
renamed systemintfcmds.h => systemintfcmds.hpp

Change-Id: I9d4ce3dd57e2e996800f9020a10cc10cdf2c3914
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/ipmid.hpp b/ipmid.hpp
index 9d62611..b59cd02 100644
--- a/ipmid.hpp
+++ b/ipmid.hpp
@@ -1,8 +1,7 @@
-#ifndef __HOST_IPMID_IPMI_H__
-#define __HOST_IPMID_IPMI_H__
-#include <stdio.h>
+#pragma once
 
-#include "host-ipmid/ipmid-api.h"
+#include <host-ipmid/ipmid-api.h>
+#include <stdio.h>
 
 // When the requester sends in a netfn and a command along with data, this
 // function will look for registered handlers that will handle that [netfn,cmd]
@@ -23,5 +22,3 @@
 #define MAX_IPMI_BUFFER 64
 
 extern FILE *ipmiio, *ipmidbus, *ipmicmddetails;
-
-#endif