Reapply "Use svn checkout --force"

This reverts commit b89b835.

Author: nebularg

release.sh

@@ -2028,7 +2028,7 @@ checkout_external() {
 
 		if [ -z "$_external_tag" ]; then
 			echo "Fetching latest version of external $_external_uri"
-			retry svn checkout -q "$_external_uri" "$_cqe_checkout_dir" || return 1
+			retry svn checkout -q "$_external_uri" "$_cqe_checkout_dir" --force || return 1
 		else
 			_cqe_svn_tag_url="${_cqe_svn_trunk_url%/trunk}/tags"
 			if [ "$_external_tag" = "latest" ]; then
@@ -2040,14 +2040,14 @@ checkout_external() {
 			if [ "$_external_tag" = "latest" ]; then
 				echo "No tags found in $_cqe_svn_tag_url"
 				echo "Fetching latest version of external $_external_uri"
-				retry svn checkout -q "$_external_uri" "$_cqe_checkout_dir" || return 1
+				retry svn checkout -q "$_external_uri" "$_cqe_checkout_dir" --force || return 1
 			else
 				_cqe_external_uri="${_cqe_svn_tag_url}/$_external_tag"
 				if [ -n "$_cqe_svn_subdir" ]; then
 					_cqe_external_uri="${_cqe_external_uri}/$_cqe_svn_subdir"
 				fi
 				echo "Fetching tag \"$_external_tag\" from external $_cqe_external_uri"
-				retry svn checkout -q "$_cqe_external_uri" "$_cqe_checkout_dir" || return 1
+				retry svn checkout -q "$_cqe_external_uri" "$_cqe_checkout_dir" --force || return 1
 			fi
 		fi
 		set_info_svn "$_cqe_checkout_dir" || return 1