Restructured the project file

Move OS specific configuration to separate project files

src/geoip/geoip.pri

@@ -0,0 +1,19 @@
+INCLUDEPATH += $$PWD
+
+HEADERS += $$PWD/geoipmanager.h
+
+SOURCES += $$PWD/geoipmanager.cpp
+
+# Add GeoIP resource file if the GeoIP database
+# should be embedded in qBittorrent executable
+contains(DEFINES, WITH_GEOIP_EMBEDDED) {
+  exists("geoip/GeoIP.dat") {
+    message("GeoIP.dat was found in src/geoip/.")
+    RESOURCES += $$PWD/geoip.qrc
+  } else {
+    DEFINES -= WITH_GEOIP_EMBEDDED
+    error("GeoIP.dat was not found in src/geoip/ folder, please follow instructions in src/geoip/README.")
+  }
+} else {
+  message("GeoIP database will not be embedded in qBittorrent executable.")
+}