Optionally signal an error if an Eshell predicate fails to match anything

Optionally signal an error if an Eshell predicate fails to match anything

* lisp/eshell/em-pred.el (eshell-error-if-no-glob): Declare it.
(eshell-apply-modifiers): Add STRING-DESC argument and signal an error
if there are no matches and 'eshell-error-if-no-glob' is set.
(eshell-parse-arg-modifier): Pass modifier string to
'eshell-apply-modifiers'.

* test/lisp/eshell/em-pred-tests.el (eshell-eval-predicate): Simplify.
(em-pred-test/no-matches): New test.

* doc/misc/eshell.texi (Bugs and ideas): Remove todo entry about this
change.