Log message

Cache.cs
  * added additional checks for work around IE Mobile bug that sends garbage for
last-modified-date
HTTPClient.cs
  * added "exyusCacheBot" as default user agent in CollectionRequestor class

	Modify	/trunk/exyus/Caching/Cache.cs	diff
	Modify	/trunk/exyus/Exyus.suo	diff
	Modify	/trunk/exyus/Other/Constants.cs	diff
	Modify	/trunk/exyus/Web/HTTPClient.cs	diff
	Modify	/trunk/exyus/bin/Debug/Exyus.dll	diff
	Modify	/trunk/exyus/bin/Debug/Exyus.pdb	diff
	Modify	/trunk/exyus/obj/Debug/Exyus.dll	diff
	Modify	/trunk/exyus/obj/Debug/Exyus.pdb	diff