I downloaded the apt source for ubuntu-mate-1510-amd64, modified the two lines in apt_pkg/packagemanager.cc, rebuild the lot according to http://askubuntu.com/questions/81870/how-to-download-modify-build-and-install-a-debian-source-package, and installed it locally on my ubuntu-mate-1510-amd64 system.
I did a check that libgcrypt20:i386 was installed, did a "do-release-upgrade -d" (or the local version of it) and it ran through successfully!
Congratulations to David K. for fixing a 5 year old bug!!
I downloaded the apt source for ubuntu- mate-1510- amd64, modified the two lines in apt_pkg/ packagemanager. cc, rebuild the lot according to http:// askubuntu. com/questions/ 81870/how- to-download- modify- build-and- install- a-debian- source- package, and installed it locally on my ubuntu- mate-1510- amd64 system.
I did a check that libgcrypt20:i386 was installed, did a "do-release-upgrade -d" (or the local version of it) and it ran through successfully!
Congratulations to David K. for fixing a 5 year old bug!!