Show commit in --version and ledger-tool's log (#12636)

* Show commit in `--version` and ledger-tool's log

* Another handy hidden env var

* Fix test

* Rename to semver!

* Fix syntax error...

version/src/lib.rs

@@ -91,12 +91,19 @@ impl fmt::Debug for Version {
 impl Sanitize for Version {}
 
 #[macro_export]
-macro_rules! version {
+macro_rules! semver {
     () => {
         &*format!("{}", $crate::Version::default())
     };
 }
 
+#[macro_export]
+macro_rules! version {
+    () => {
+        &*format!("{:?}", $crate::Version::default())
+    };
+}
+
 #[cfg(test)]
 mod test {
     use super::*;