add visual studio project files.

new file:   libwebqq/libwebqq-vc2010.vcxproj
	new file:   libxmpp/gloox/gloox-vs2010.vcproj
	new file:   libxmpp/gloox/gloox-vs2010.vcxproj
	new file:   libxmpp/gloox/gloox-vs2010.vcxproj.filters
	new file:   libxmpp/gloox/gloox-vs2010.vcxproj.user
	new file:   qqbot-vc2010.sln
	new file:   qqbot-vc2010.vcxproj