Add convenience rules for building individual pseudo components.
Add convenience rules for building individual pseudo components.

Add rules for 'pseudo', 'pseudodb', 'pseudolog' and 'libpseudo'.

wrpseudo/pseudo,estobbart/pseudo,incandescant/pseudo,ystk/tools-yocto1-pseudo,incandescant/pseudo,ystk/tools-yocto1-pseudo,wrpseudo/pseudo,giuseppe/pseudo,estobbart/pseudo,incandescant/pseudo,estobbart/pseudo,ystk/tools-yocto1-pseudo,giuseppe/pseudo,giuseppe/pseudo,wrpseudo/pseudo,incandescant/pseudo,giuseppe/pseudo,ystk/tools-yocto1-pseudo,estobbart/pseudo