Add --line-number option to hg annotate (issue506)
Line numbers are separated from the last annotation element with a colon,
like with many other commands, e.g. (hg) grep or compiler errors.
Idea and tests by FUJIWARA Katsunori.
% init
% commit
adding base
% qnew mqbase
% qrefresh
% qdiff
diff -r 67e992f2c4f3 base
--- a/base
+++ b/base
@@ -1,1 +1,1 @@ base
-base
+patched
% qdiff dirname
diff -r 67e992f2c4f3 base
--- a/base
+++ b/base
@@ -1,1 +1,1 @@ base
-base
+patched