crc32c, crypto/xtea: check in LICENSE symlinks.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/ccan/crc32c/LICENSE b/ccan/crc32c/LICENSE
new file mode 120000 (symlink)
index 0000000..2354d12
--- /dev/null
+++ b/ccan/crc32c/LICENSE
@@ -0,0 +1 @@
+../../licenses/BSD-MIT
\ No newline at end of file

diff --git a/ccan/crypto/xtea/LICENSE b/ccan/crypto/xtea/LICENSE
new file mode 120000 (symlink)
index 0000000..08d5d48
--- /dev/null
+++ b/ccan/crypto/xtea/LICENSE
@@ -0,0 +1 @@
+../../../licenses/CC0
\ No newline at end of file