docs/manpages: Fixed the way we include man pages.
docs/manpages: Fixed the way we include man pages.

This is fixed a different way for tracker-0.10.
This fixes distcheck

hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker