[QBS] System-wide configuration

[Ruslan Nigmatullin]

Currently it's impossible to configure QBS by package systems like rpm/dpkg as it doesn't support system-wide configuration files and reads configs only from home directory. That makes impossible to install qbs package and use it for building some software in building system without changing of qbs configuration in home directory.

Would qbs sometime support reading configs from /etc/xdg/QtProject/qbs.conf and possibly from /etc/xdg/QtProject/qbs/*.conf (the last option is need for ability install independently profiles gcc.conf, clang.conf, qt5.conf, qt4.conf, etc)?

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Ruslan Nigmatullin