Add info about usage of 'unsafe' keyword in bindings to foreign interfaces.
Add info about usage of 'unsafe' keyword in bindings to foreign interfaces.

vhbit/rust,jashank/rust,vhbit/rust,graydon/rust,pshc/rust,aidancully/rust,vhbit/rust,l0kod/rust,dwillmer/rust,zubron/rust,pshc/rust,aidancully/rust,pshc/rust,vhbit/rust,zubron/rust,jroesch/rust,GBGamer/rust,zubron/rust,GBGamer/rust,aidancully/rust,graydon/rust,jashank/rust,jroesch/rust,jroesch/rust,jashank/rust,pshc/rust,graydon/rust,dwillmer/rust,zubron/rust,GBGamer/rust,vhbit/rust,GBGamer/rust,zubron/rust,zubron/rust,dwillmer/rust,jashank/rust,pshc/rust,vhbit/rust,GBGamer/rust,dwillmer/rust,jashank/rust,GBGamer/rust,aidancully/rust,jroesch/rust,graydon/rust,zubron/rust,GBGamer/rust,l0kod/rust,dwillmer/rust,jashank/rust,l0kod/rust,jroesch/rust,pshc/rust,dwillmer/rust,l0kod/rust,pshc/rust,graydon/rust,l0kod/rust,jroesch/rust,vhbit/rust,l0kod/rust,aidancully/rust,GBGamer/rust,aidancully/rust,l0kod/rust,pshc/rust,jashank/rust,jashank/rust,jroesch/rust,graydon/rust,dwillmer/rust,jroesch/rust,vhbit/rust,dwillmer/rust,l0kod/rust,zubron/rust