Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/doc/efun/pg_conv_string b/doc/efun/pg_conv_string
new file mode 100644
index 0000000..d849d06
--- /dev/null
+++ b/doc/efun/pg_conv_string
@@ -0,0 +1,20 @@
+OPTIONAL
+SYNOPSIS
+ string pg_conv_string(string str)
+
+DESCRIPTION
+ Convert the string <str> into a string that is correctly interpretated
+ for usage as a string in pg_query(), e.g. ' is replaced with \' and so
+ on.
+
+ The function is available only if the driver is compiled with
+ PostgreSQL support. In that case, __PGSQL__ is defined.
+
+ The efun triggers a privilege violation ("pgsql", "pg_connect").
+
+HISTORY
+ Added in 3.3.708.
+
+SEE ALSO
+ pgsql(C), pg_query(E), pg_pending(E), pg_conv_string(E), pg_close(E),
+ privilege_violation(M)