It seems that 10.2 pulls /usr/local/bin out of your path.
Put it back by adding setenv PATH "${PATH}:/usr/local/bin"
to your ~/.tcshrc or ~/.cshrc file.
Oh, and the zsh stuff is a little wrong :-/ I don't think any recompilation
in pursuit of bells and whistles is necessary, just the addition of some
shared function files. Specifically promptinit for the prompts.