fix(configure): misleading error if C compiler is not installed

fix(configure): misleading error if C compiler is not installed

While preparing a new system for development, `./configure` reaches a point
where it fails with:

```
$ ./configure
dracut needs fts development files.
```

After installing the fts library, `./configure` keeps throwing the same error:

```
$ rpm -qf /usr/include/fts.h
glibc-devel-2.38-6.1.x86_64
$ ./configure
dracut needs fts development files.
```

The problem is `${CC} $CFLAGS $LDFLAGS conftest.c` can also fail if the compiler
referenced by `$CC` is not installed.