Merge topic 'ctest-init'

80d6b20657 cmCTestStartCommand: Remove data members
0bfe17e15b cmCTest: Separate initialization of script and command line
402af107a5 cmCTest: Add GetTestGroupString function
37651800ed cmCTest: Extract functions CreateNewTag and ReadExistingTag
d28947913c cmCTest: Separate InitializeTesting function
60b822da52 cmCTest: Function ReadCustomConfigurationFileTree never fails
3c321b6571 cmCTestStartCommand: Inline InitializeFromCommand function
9fbdfa11d4 cmCTest: Separate test execution from dashboard mode
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !9911