[#6] Add ENABLE_ASAN option to enable ASAN and fix compilation errors for -Wall
- Edit CMakeLists.txt to support ENABLE_ASAN option for enable ASAN
- Fix compilation errors for -Wall in libcurl.c
- Add ASAN_OPTIONS=detect_leaks=0 as analyzing leaks will be very time consuming the start of this projct
Edited by Jirapat Distaprom