Update appveyor.yml (#1722)
Update appveyor.yml (#1722)

cmake changes in appveyor build environment require specification of target path instead of making the assumption that PWD is used if not specified
SergiySW/raiblocks,SergiySW/raiblocks,SergiySW/raiblocks,SergiySW/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,SergiySW/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks,clemahieu/raiblocks