VS: Refactor generator toolset parsing (!481) · Merge requests · CMake / CMake · GitLab

We parse CMAKE_GENERATOR_TOOLSET values of the forms:

toolset
toolset,host=x64
host=x64

Generalize the parsing to support the forms:

toolset
toolset[,key=value]*
key=value[,key=value]*

Disallow duplicate keys. Require all but the first field to be of key=value form.