Make gtk-doc and gobject-introspection optional
Make gtk-doc and gobject-introspection optional

Do not create gtk-doc documentation when gtk-doc is not available. Do
not create gobject-introspection data when gobject-introspection is not
available.

RevBy: TrustMe

Full, original commit at 86c14631c328b59d63ae54226bb61bd61f294cce in maliit-framework

maliit/inputcontext-gtk,maliit/inputcontext-gtk