[okular] [Bug 430931] Include PS backend for MS Windows build

https://bugs.kde.org/show_bug.cgi?id=430931 --- Comment #2 from Avatar Lei --- You are right, I'd rather say the PS backend support is separated as okular-spectre and libspectre is the actual backend. Yes, I'll appreciate it if all the gs stuff is included. I also noticed the latest

[okular] [Bug 430931] New: Include PS backend for MS Windows build

https://bugs.kde.org/show_bug.cgi?id=430931 Bug ID: 430931 Summary: Include PS backend for MS Windows build Product: okular Version: 1.11.3 Platform: Microsoft Windows OS: Microsoft Windows Status: REPORTED