Changes for version 3.53
- (libev) on win32, the event loop creation could randomly fail due to an initialised variable having the wrong value.
- (libev) probe for CLOCK_REALTIME support at runtime as well and fall back to gettimeofday if there is an error, to support older operating systems with newer header files/libraries.
- prefer gettimeofday over clock_gettime by default.
- libev - a high performance full-featured event loop written in C