zsh: version bump to 5.0.6

Change-Id: I95e749dae3d477273f67b12bd94444ed9c07fadf
GraphicsMagick: Version bump to 1.3.20

+ Add webp option.

Change-Id: I6327132d7f66f5a549b8250c71cafd5ef09e8baf
fetchmail: require sourceforge

+ require SF, berlios is kill
+ update homepage

Change-Id: I850eb00bac38a93905a77bf03f0dfd711f191086
app-editors/vim-runmtime: enable syntax highlighting as default

Change-Id: I3aefbdd8c9c16665b34556457d286cfe62fe383d