Split Appveyor CI by language.
Split Appveyor CI by language.

- one job `make all` take more than 1 hour (CI limit for a job)

google/or-tools,or-tools/or-tools,or-tools/or-tools,google/or-tools,or-tools/or-tools,google/or-tools,google/or-tools,or-tools/or-tools,or-tools/or-tools,google/or-tools,google/or-tools,or-tools/or-tools