[Build] Set SharpDXSdkDir from the directory where SharpDX.targets is stored
[Build] Set SharpDXSdkDir from the directory where SharpDX.targets is stored

wyrover/SharpDX,weltkante/SharpDX,waltdestler/SharpDX,TigerKO/SharpDX,manu-silicon/SharpDX,manu-silicon/SharpDX,fmarrabal/SharpDX,mrvux/SharpDX,Ixonos-USA/SharpDX,VirusFree/SharpDX,TechPriest/SharpDX,fmarrabal/SharpDX,waltdestler/SharpDX,davidlee80/SharpDX-1,TechPriest/SharpDX,RobyDX/SharpDX,sharpdx/SharpDX,jwollen/SharpDX,dazerdude/SharpDX,TigerKO/SharpDX,dazerdude/SharpDX,andrewst/SharpDX,jwollen/SharpDX,mrvux/SharpDX,waltdestler/SharpDX,TigerKO/SharpDX,sharpdx/SharpDX,VirusFree/SharpDX,VirusFree/SharpDX,mrvux/SharpDX,davidlee80/SharpDX-1,weltkante/SharpDX,Ixonos-USA/SharpDX,wyrover/SharpDX,manu-silicon/SharpDX,sharpdx/SharpDX,Ixonos-USA/SharpDX,RobyDX/SharpDX,weltkante/SharpDX,fmarrabal/SharpDX,jwollen/SharpDX,PavelBrokhman/SharpDX,davidlee80/SharpDX-1,dazerdude/SharpDX,PavelBrokhman/SharpDX,TechPriest/SharpDX,PavelBrokhman/SharpDX,TigerKO/SharpDX,Ixonos-USA/SharpDX,waltdestler/SharpDX,manu-silicon/SharpDX,dazerdude/SharpDX,andrewst/SharpDX,davidlee80/SharpDX-1,andrewst/SharpDX,weltkante/SharpDX,PavelBrokhman/SharpDX,fmarrabal/SharpDX,jwollen/SharpDX,wyrover/SharpDX,VirusFree/SharpDX,wyrover/SharpDX,RobyDX/SharpDX,TechPriest/SharpDX,RobyDX/SharpDX