c-ares configure fails with missing test/Makefile.in

[mtelka]

The c-ares configure could fail with missing test/Makefile.in.

This is because:

• the libcares copy in deps/c-ares does not contains tests (the test directory is missing), and
• building of tests is enabled by default and so when the configure detects all prerequisites for building tests it tries to do so.

Suggested fix:

--- gevent-24.2.1/_setupares.py.orig
+++ gevent-24.2.1/_setupares.py
@@ -42,7 +42,7 @@
 ares_configure_command = ' '.join([
     "(cd ", quoted_dep_abspath('c-ares'),
     " && if [ -r include/ares_build.h ]; then cp include/ares_build.h include/ares_build.h.orig; fi ",
-    " && sh ./configure --disable-dependency-tracking -C " + cflags,
+    " && sh ./configure --disable-dependency-tracking --disable-tests -C " + cflags,
     " && cp src/lib/ares_config.h include/ares_build.h \"$OLDPWD\" ",
     " && cat include/ares_build.h ",
     " && if [ -r include/ares_build.h.orig ]; then mv include/ares_build.h.orig include/ares_build.h; fi)",