Adding cache function (cont)
Change architecture to increase the scalability.

Originally proVIDE generates a system-wide standard Vim scripts suit
for every user, but all files are put in /etc/provide/ and users can't
modify them easily.

The new design is to provide utilities and users can use them to create a
default environment.  Because everything is created in $HOME/.provide/,
it becomes easier to customize your proVIDE.