Make it possible to symlink to dartdoc and pub in the SDK.

sdk/bin/pub

Index: sdk/bin/pub
diff --git a/sdk/bin/pub b/sdk/bin/pub
index 76085ab8b6434cb23c205f9491a0e274ec9c9717..68f934a1164f5b6f5d7bbb4ceb6826935d98536f 100755
--- a/sdk/bin/pub
+++ b/sdk/bin/pub
@@ -3,9 +3,14 @@
 # structure.
 
 # Setting BIN_DIR this way is ugly, but is needed to handle the case where
-# dart-sdk/bin has been symlinked to. On MacOS, readlink doesn't work
-# with this case.
-BIN_DIR="$(cd "${0%/*}" ; pwd -P)"
+# dart-sdk/bin and/or dart-sdk/bin/pub has been symlinked to. On MacOS, readlink
+# doesn't work with this case.
+linked_path=`readlink "$0"`
+if [ "$linked_path" = "" ]; then
+    BIN_DIR="$(cd "${0%/*}" ; pwd -P)"
+else
+    BIN_DIR="$(cd "${linked_path%/*}" ; pwd -P)"

[dgrove, 2013/05/30 19:46:38]

ditto - I don't understand what this is trying to do.

+fi
 DART_SDK="$(cd "${BIN_DIR%/*}" ; pwd -P)"
 
 exec "$BIN_DIR"/dart "$DART_SDK"/bin/snapshots/pub.dart.snapshot $@