Implement out-qualified target syntax for setting target-specific vars

So now we can do:

doc{INSTALL}@./: install = false

Note that so far that's the only place where we support out-qualification.
Grep for @@ OUT to see other places.

1 files changed, 3 insertions, 0 deletions

diff --git a/tests/target/out-qualified/test.sh b/tests/target/out-qualified/test.sh
new file mode 100755
index 0000000..f1ece0e
--- /dev/null
+++ b/tests/target/out-qualified/test.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+b -q src/@out/