* lisp/cedet/semantic/bovine.el: Fix recent regression

* lisp/cedet/semantic/bovine.el: Fix recent regression

The conversion to `lexical-binding` introduced a regression because
`bovine/c.el` relied on inspecting the local variable `lse` in one of
its callers.

(semantic-bovinate-stream): Bind `lse` dynamically, because of
`semantic-parse-region-c-mode`.
(semantic-bovinate-nonterminal-check-map): Rename from
`semantic-bovinate-nonterminal-check-obarray` to hold some other kind
of table.
(semantic-bovinate-nonterminal-check): Use a hash-table instead of an obarray.

* lisp/cedet/semantic/bovine/c.el (semantic-parse-region-c-mode):
Declare use of `lse` via dynamic scoping.

* test/lisp/cedet/semantic-utest-c.el
(semantic-test-c-preprocessor-simulation): Re-enable test.