Configure bugtraq options after clone

This enables linking to issues from commit messages in various tools (e.g. gitk, TortoiseGit, etc.)

build/_git-config.shade

@@ -0,0 +1,4 @@
+
+var gitCommand='config ${gitOptionName} ${gitOptionValue}'
+
+git 

makefile.shade

@@ -57,6 +57,8 @@ default TARGET_DIR='${Path.Combine(BASE_DIR, "artifacts", "build")}'
             else 
             {
                 GitClone(repo.Value, "dev");
+                GitConfig("bugtraq.url", "http://github.com/aspnet/" + repo.Key + "/issues/%BUGID%", repo.Key);
+                GitConfig("bugtraq.logregex", @"#(\d+)", repo.Key);
             }
         }
     }
@@ -134,5 +136,8 @@ macro name='GitPull' gitUri='string' gitBranch='string' gitFolder='string'
 macro name='GitClone' gitUri='string' gitBranch='string'
     git-clone
 
+macro name='GitConfig' gitOptionName='string' gitOptionValue='string' gitFolder='string'
+    git-config
+
 macro name='Exec' program='string' commandline='string' workingdir='string'
     exec