use get_config_variables in ./download

Change-Id: Ibe36598dfc6aa5205d43556c5e809be8c716f626

download

@@ -30,7 +30,7 @@ set -o pipefail
 
 # environment setup yet?
 if [ -z "$TARFILE_LOCATION" ]; then
-    . ./config_host.mk.source
+    . ./bin/get_config_variables TARFILE_LOCATION GIT_LINK_SRC GIT_NEEDED_SUBMODULES COM CPUNAME VCVER DBGHELP_DLL SRC_ROOT OXYGENOFFICE_PACK
 fi
 
 # we want to clone if we are in the bootstrap git repo and clone does not exist yet