libpacman: Remove 2 usage of pmtrans_t::m_packages.
libpacman: Remove some more m_packages occurences.
libpacman: Simplify pmtrans_t::sortbydeps call interaface.
libpacman: Rework pmtrans_t::sortbydeps so it works with and reorder pmtrans_t::syncpkgs.
libpacman: Drop last real usage of pmtrans_t::m_packages.
libpacman: Drop pmtrans_t::m_packages.
libpacman: Remove some warnings in deps.cpp.
libpacman: Add FStringList add_nocopy, remove and remove_if. Add flib::find_if.