Use proper version string.

util/src/misc.rs

@@ -18,6 +18,8 @@
 
 use std::fs::File;
 use common::*;
+use target_info::Target;
+use rustc_version;
 
 #[derive(Debug,Clone,PartialEq,Eq)]
 /// Diff type for specifying a change (or not).
@@ -62,3 +64,8 @@ pub fn contents(name: &str) -> Result<Bytes, UtilError> {
 	try!(file.read_to_end(&mut ret));
 	Ok(ret)
 }
+
+/// Get the standard version string for this software.
+pub fn version() -> String {
+	format!("Parity/-/{}/{}-{}-{}/{}", env!("CARGO_PKG_VERSION"), Target::arch(), Target::env(), Target::os(), rustc_version::version())
+}