Fixed the apparently harmless segfault whne YaST is finishing

`YCPPathRep::Component` uses `Ustring` which shares string instances. The
problem is that backing hash for these is `SymbolEntry::_nameHash` which is
destroyed before `ScriptingAgent`. It looks like it is a leaking pointer but
`dl_Close` somehow does it.
changes and bump version
Merge pull request #17 from yast/fix_end_segfault

Prevent segfault at the end of yast2 run