optimizes functional tests (#1200)

* optimizes functional tests

This PR removes `expect` from the most of the test cases and
adds a couple of primitives to match against output of any command.

Match `bap` `bir` and find the `main` function according to the pattern:

```
 match $file bir "" {
     "sub .*main" {pass "$test $file"}
     default {fail "$test $file"}
 }
```

Match bap ouptut for `--version` option:
```
match_output "bap" "--version" {
    "error" {fail $test}
    "1" {pass $test}
}
```

Check that all strings can be found in the output:
```
find_all $file bir $lines $test
```

Fixes #1136

* optimizes mc

* updates testsuite

* updates testsuite

* updates testsuite

* updates testsuite

Author: gitoleg