Revert "fix missing include (regression of #5)"

This reverts commit 546dabe05c00e87296952cb2ca655e01895bd5ed.
Revert "Merge pull request #6 from ros/fix_qt_moc"

This reverts commit 0e11b41ac53aad0e043b77d4d5950889245eaceb, reversing
changes made to fc19df449d9ac297e8ab829ff22e99323c33ae93.
Fix a moc generation error with boost >= 1.48

See:

https://bugreports.qt-project.org/browse/QTBUG-22829
Merge pull request #7 from ros/fix_moc_gen

Fix moc gen