Add nop and source targets and keyring.

The key fingerprint is from <https://www.gnupg.org/signature_key.html>.

1 files changed, 6 insertions, 0 deletions

diff --git a/build b/build
new file mode 100755
index 0000000..2a40656
--- /dev/null
+++ b/build
@@ -0,0 +1,6 @@
+#!/usr/bin/make -f
+
+include ../source.mk
+
+nop:
+	@: