Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/doc/efun/tls_available b/doc/efun/tls_available
new file mode 100644
index 0000000..804a03d
--- /dev/null
+++ b/doc/efun/tls_available
@@ -0,0 +1,19 @@
+PRELIMINARY
+SYNOPSIS
+ int tls_available()
+
+DESCRIPTION
+ If the global TLS initialisation could not been set up,
+ tls_is_available() returns 0, otherwise 1.
+ It is not very useful calling any other tls_*-efun if this one
+ returns 0, since there is no TLS-encryption available.
+ Most likely the global initialisation fails due to missing or
+ unreadable key resp. certificate-file.
+
+HISTORY
+ Introduced in LDMud 3.3.474 and following, backported to 3.2.11.
+
+SEE ALSO
+ tls_init_connection(E), tls_deinit_connection(E),
+ tls_query_connection_state(E), tls_query_connection_info(E),
+ tls_check_certificate(E), tls_refresh_certs(E)