imports from libregamewiki and some cvs to git conversions

entries/liberation_circuit.md

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+# Liberation Circuit
+
+_Real-time strategy game about escaping from a hostile computer system, by designing and building units sufficient to the task._
+
+- Home: https://github.com/linleyh/liberation-circuit/, https://forums.tigsource.com/index.php?topic=48505.0
+- State: mature
+- Keywords: strategy, open content, programming, real time
+- Code repository: https://github.com/linleyh/liberation-circuit.git
+- Code language: C
+- Code license: GPL-3.0
+- Code dependencies: Allegro
+- Assets license: GPL-3.0
+
+Developer: Linley Henzell
+
+## Building
+
+- Build system: CMake