add test for writing module with unresolved methods twice
add test for writing module with unresolved methods twice

mono/cecil,furesoft/cecil,cgourlay/cecil,fnajera-rac-de/cecil,SiliconStudio/Mono.Cecil,ttRevan/cecil,sailro/cecil,joj/cecil,xen2/cecil,jbevain/cecil,gluck/cecil,saynomoo/cecil,kzu/cecil