Fixed Issues

1. added parents to widgets wherever convenient
2. remove m_currentDir and m_baseDir from fileviewhgplugin.h
3. recognize filename with unicode chars
4. fixed parent issue in commit dialog
5. HgStatusList::reloadTable and beginRetrieval gets version state
info of current repository from same function in HgWrapper.
6. Little changes in HgWrapper to make it contain QProcess rather
than inherit it. Will take time and mroe changes.
7. No other part of program uses QProcess functions except a couple
of signals. Done to make HgWrapper contain QProcess objects rather
than inherit it.

TODO:
1. Recursive add, remove.

FIXME:
1. Version state of directories having all unversioned files
2. HgWrapper. Since currenly under work, few functions may
not be working correctly.