Removed automatic detection of "fragmentHost" in LibWrapper.

I am mavenizing this jar:

http://maven.tmatesoft.com/content/repositories/releases/org/tmatesoft/svnkit/svnkit/1.8.6/svnkit-1.8.6.pom

Which has dependencies such as the following:

``` xml
<dependency>
    <groupId>com.trilead</groupId>
    <artifactId>trilead-ssh2</artifactId>
    <version>1.0.0-build217</version>
    <scope>compile</scope>
</dependency>
```

I was surprised when this plugin showed up as a Fragment, with no host to bind itself to.  Presumably this "Fragment" functionality is in here for a reason, in which case I expect you'll reject this PR.  Maybe there's a way to mark Fragments explicitly?