change task mutex to monitor and synchronize move method
treeaa033446f57f70d3dbbf22c25bc4b9d7a185b111
-rw-r--r-- 4961 Announce.txt
-rw-r--r-- 5082 History.txt
-rw-r--r-- 2498 Manifest.txt
-rw-r--r-- 1583 README.txt
-rw-r--r-- 846 Rakefile
drwxr-xr-x - bin
drwxr-xr-x - examples
drwxr-xr-x - ext
drwxr-xr-x - ideas
drwxr-xr-x - init
drwxr-xr-x - lib
drwxr-xr-x - site
drwxr-xr-x - test