Merge branch 'fix-bootstrap' into 'master'

bootstrap.sh: Install system dependencies before installing Cargo packages

See merge request redox-os/redox!1275

bootstrap.sh

@@ -577,8 +577,6 @@ done
 banner
 
 rustInstall
-cargoInstall cargo-config 0.1.1
-cargoInstall xargo 0.3.20
 
 if [ "$update" == "true" ]; then
 	git pull upstream master
@@ -619,6 +617,9 @@ else
 	fi
 fi
 
+cargoInstall cargo-config 0.1.1
+cargoInstall xargo 0.3.20
+
 if [ "$dependenciesonly" = false ]; then
 	boot
 fi