Modern conan will retry downloads on its own. Change default number of
attempts to 5 for more reliability.
Change-Id: Iafd4845b31c3e5fb296ba0b897cbf2030c412b04
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
[*] Update Conan to 1.17.0, adjust to change in command line arguments
[*] Update Conan packages to up-to-date versions, add libjpeg-turbo and
packages for 64-bit MinGW
[*] Rename 03-conan.ps1 to 11-conan.ps1 so that it is installed after
Python 3 and MinGW
[*] Add license header to conan.ps1
Change-Id: Ibc451ddc54a7227eb6d3a007a20351e77a46875f
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
