rbutil: extend game file installation

RbUtil will now install freely distributable data files for Duke Nukem 3D,
Quake, SGT-Puzzles (fonts), Wolfenstein 3-D, and Another World. Currently
the urls point to my personal server, pending upload to the main download
server.

Change-Id: I2806fd1ad7e9bb0fcb7aee5444840708e6e63032

rbutil/rbutilqt/base/systeminfo.cpp

@@ -42,6 +42,11 @@ const static struct {
     { SystemInfo::DailyVoiceUrl,        "daily_voice_url",      "" },
     { SystemInfo::ReleaseVoiceUrl,      "release_voice_url",    "" },
     { SystemInfo::DoomUrl,              "doom_url",             "" },
+    { SystemInfo::Duke3DUrl,            "duke3d_url",           "" },
+    { SystemInfo::PuzzFontsUrl,         "puzzfonts_url",        "" },
+    { SystemInfo::QuakeUrl,             "quake_url",            "" },
+    { SystemInfo::Wolf3DUrl,            "wolf3d_url",           "" },
+    { SystemInfo::XWorldUrl,            "xworld_url",           "" },
     { SystemInfo::ReleaseUrl,           "release_url",          "" },
     { SystemInfo::DailyUrl,             "daily_url",            "" },
     { SystemInfo::BuildInfoUrl,         "build_info_url",       "" },

rbutil/rbutilqt/base/systeminfo.h

@@ -44,6 +44,11 @@ class SystemInfo : public QObject
             DailyFontUrl,
             DailyVoiceUrl,
             DoomUrl,
+            Duke3DUrl,
+            QuakeUrl,
+            PuzzFontsUrl,
+            Wolf3DUrl,
+            XWorldUrl,
             ReleaseUrl,
             ReleaseVoiceUrl,
             ReleaseFontUrl,