WIP: Add XdgDesktopFile::actionExpandExecString

[damianatorrpm]

Same as expandExecString but for actions.

[luis-pereira]

• Squash the two commits into one commit
• We are using 4 spaces tab.
• Remove trailing whitespaces. See them with git log --check

Thanks for your contribution

[damianatorrpm]

I don't see this options in github GUI. I have never used git in-depth except github and do not intend to do so. I can send the patch via e-mail alternatively if you want. If there is some GUI for git that has these options to do easily I am ready to install that. The buildsystem I use has nothing to do with git though for the sake of working together with upstream I fork using github, copy paste the bits out of my patch file and create a pull request. I am extremely reluctant to git in general as I do not like it's workflow.

[luis-pereira]

@damianatorrpm
git is not build system. It's a distributed control version system. The most widely used these days. LXQt build system is CMake.
LXQt uses git. So a developer must have a minimal understanding on how to use it.
You can use gitk to do a mixed reset to the first commit, them use git gui to amend the commit. Then push as usual, but use the -f flag.

[tsujan]

I also had problems with git when I started to use it several years ago. But, after a few weeks, everything became clear. IMHO, the best way of using git is command line; git front-ends/GUIs hide git.