put cachedir in environmental variable

XBMK_CACHE is now used, instead of hardcoding cache/

this is exported initialised to cache/, if unset.
this means you can set your own directory, and it means
./update release will use the same directory.

this means bandwidth wastage is further avoided.

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/build b/build
index 6831c781..ce778e2a 100755
--- a/build
+++ b/build
@@ -100,7 +100,7 @@ build_release()
 	cd "$srcdir" || $err "$vdir: !cd \"$srcdir\""
 	./update trees -f
 	rmgit .
-	x_ rm -Rf cache tmp
+	x_ rm -Rf tmp
 	x_ mv src/docs docs
 	) || $err "can't create release files"