extended the new requirements for autosubmit deployment (error prone due to large number of arguments required)

yac is built using preconfigured configure script and further flags added to yac and yaxt to bring it close to icon

lib64 folder added to fyaml-libs only if it exists (thank you levante); minor change to run on macos

cleaned up the partial building of deps via yac and made it entirely a user responsibility to manage the yaco deps enforced via the icon-stack

changed the way of handling yaco version in the yaco-build script to avoid extra step in the release