Use lexical-binding in most semantic tests

Use lexical-binding in most semantic tests

* test/lisp/cedet/semantic-utest-fmt.el:
* test/lisp/cedet/semantic-utest-ia.el:
* test/lisp/cedet/semantic-utest.el:
* test/lisp/cedet/srecode-utest-getset.el:
* test/lisp/cedet/srecode-utest-template.el: Use lexical-binding.

* test/lisp/cedet/semantic-utest-fmt.el (semantic-fmt-utest):
* test/lisp/cedet/semantic-utest.el (semantic-utest-generic)
(semantic-utest-Python, semantic-utest-Javascript)
(semantic-utest-Java, semantic-utest-Makefile)
(semantic-utest-Scheme, semantic-utest-Html, semantic-utest-PHP)
(semantic-utest-Csharp, semantic-utest-last-invalid):
* test/lisp/cedet/semantic-utest-ia.el (semantic-ia-utest-buffer)
(semantic-symref-test-count-hits-in-tag):
* test/lisp/cedet/srecode-utest-getset.el
(srecode-insert-getset-fully-automatic-flag): Silence
byte-compiler.