Win32: properly enabled select on Windows. Previously, select was compiled in by default, but the NGX_HAVE_SELECT macro was not set, resulting in iocp being used by default unless the "--with-select_module" configure option was explicitly specified. Since the iocp module is not finished and does not work properly, this effectively meant that the "--with-select_module" option was mandatory. With the change NGX_HAVE_SELECT is properly set, making "--with-select_module" optional. Accordingly, it is removed from misc/GNUmakefile win32 target.

--- a/auto/os/win32
+++ b/auto/os/win32
@@ -34,6 +34,7 @@ EVENT_MODULES="$EVENT_MODULES $IOCP_MODU
 EVENT_FOUND=YES
 
 if [ $EVENT_SELECT = NO ]; then
+    have=NGX_HAVE_SELECT . auto/have
     CORE_SRCS="$CORE_SRCS $SELECT_SRCS"
     EVENT_MODULES="$EVENT_MODULES $SELECT_MODULE"
 fi