Refine documentation of default name_prefix
Refine documentation of default name_prefix

Refine documentation of the default name_prefix, so people don't get the
impression they can write logic which uses 'lib' as the default, when
they should be defaulting to '[]', to let us take care of the
complexities.

becm/meson,mesonbuild/meson,becm/meson,jpakkane/meson,QuLogic/meson,pexip/meson,QuLogic/meson,pexip/meson,pexip/meson,pexip/meson,becm/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,pexip/meson,pexip/meson,jpakkane/meson,mesonbuild/meson,becm/meson,pexip/meson,mesonbuild/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,QuLogic/meson,jpakkane/meson,becm/meson,jpakkane/meson,mesonbuild/meson,becm/meson,QuLogic/meson,QuLogic/meson,becm/meson,mesonbuild/meson,QuLogic/meson,becm/meson,jpakkane/meson,becm/meson,QuLogic/meson,mesonbuild/meson,jpakkane/meson,becm/meson,mesonbuild/meson,mesonbuild/meson,QuLogic/meson,jpakkane/meson,QuLogic/meson,pexip/meson