The Icon was renamed in #8283 for Linux builds, and the fix proposed in #8312 would in turn break
the icon for Windows users.
I've decided to fix the aboutdialog.ui file via qtcreator.
I'm not sure its important to have the yuzu icon inside the About dialog grabbed from the local Qt theme,
but I've reword how the code works for that, and we can just delete those lines.
I've also thrown the yuzu.png through pngcrush to remove this warning
libpng warning: iCCP: known incorrect sRGB profile
Credit to abouvier for bringing bug up.
This formats all copyright comments according to SPDX formatting guidelines.
Additionally, this resolves the remaining GPLv2 only licensed files by relicensing them to GPLv2.0-or-later.
Specifies the conversions explicitly to avoid implicit conversions from
const char* to QString. This makes it easier to disable implicit QString
conversions in the future.
In this case, the implicit conversion was technically wrong as well. The
implicit conversion treats the input strings as ASCII characters. This
would result in an incorrect conversion being performed in the rare case
a branch name was created with a non-ASCII Unicode character, likely
resulting in junk being displayed.
