1.2dev: increase clone depth on AppVeyor
1.2dev: increase clone depth on AppVeyor

Merged r14496 from 1.0-stable.

[skip ci]


git-svn-id: 0d96b0c1a6983ccc08b3732614f4d6bfcf9cbb42@14499 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac