Global USE flag

Add general support for PDF (Portable Document Format), this replaces the pdflib and cpdflib flags

Packages describing “pdf” as local USE flag

Package “pdf” Flag Description
app-doc/kicad-doc Generate documentation in PDF format
app-doc/tldp-howto Install pdf docs
app-misc/gourmet Enable export to PDF
gnome-extra/gnome-commander Add metadata support for PDF
www-client/netsurf PDF output support (media-libs/libharu)