Fix codes for compiling with mbedTLS

Clean up codes. (+6 squashed commit)

Squashed commit:

[4126d9e] Update build scripts

[2ee5027] Update CMake module

[71da951] Update build scripts

[dea8d3f] Update CMake script

[92113ba] Clean up codes and update build script

src/main.cpp

@@ -298,7 +298,6 @@ void readConf()
             ini.GetAll("surge_ruleset", rulesets);
             importItems(rulesets);
         }
-
     }
     else
     {