Comment 3 for bug 676454

This patch removes all postinstall and prerm scripts used to set alternatives for cross toolchain packages. Additionally it adds preinst scripts which use update-alternatives to remove previously set alternatives for cross compiler.

Native build does not used postinst/prerm scripts at all and is not affected. Change will need to be done in gcc-4.[3-6] source packages as they are present in Debian 'sid'. gcc-4.1 is present in squeeze, gcc-4.2 only in lenny and I do not know should they be affected too or not.