io.backend.unix.multiplexers: add meta-data

diff --git a/basis/io/backend/unix/multiplexers/authors.txt b/basis/io/backend/unix/multiplexers/authors.txt
new file mode 100755 (executable)
index 0000000..56f4654
--- /dev/null
+++ b/basis/io/backend/unix/multiplexers/authors.txt
@@ -0,0 +1 @@
+Slava Pestov\r

diff --git a/basis/io/backend/unix/multiplexers/tags.txt b/basis/io/backend/unix/multiplexers/tags.txt
new file mode 100755 (executable)
index 0000000..6abe115
--- /dev/null
+++ b/basis/io/backend/unix/multiplexers/tags.txt
@@ -0,0 +1 @@
+unportable\r