generateManual: do not regenerate if man page is up to date
generateManual: do not regenerate if man page is up to date

ROOT-9925 #close

karies/root,root-mirror/root,olifre/root,karies/root,karies/root,olifre/root,olifre/root,root-mirror/root,olifre/root,karies/root,karies/root,olifre/root,karies/root,olifre/root,olifre/root,karies/root,olifre/root,olifre/root,root-mirror/root,root-mirror/root,root-mirror/root,karies/root,karies/root,olifre/root,karies/root,karies/root,root-mirror/root,root-mirror/root,root-mirror/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root