* eshell/em-hist.el:

* eshell/em-hist.el:
* eshell/em-dirs.el (eshell-complete-user-reference): Declare
pcomplete functions and variables to avoid compiler warnings.

* eshell/em-script.el (eshell-login-script, eshell-rc-script):
* eshell/em-dirs.el (eshell-last-dir-ring-file-name):
* eshell/em-alias.el (eshell-aliases-file):
* eshell/em-hist.el (eshell-history-file-name): Use
expand-file-name instead of concat to make file names (Bug#4308).