THRIFT-3113 m4 C++11 macro issue

Make it cross-compile happy the hard way, there's no clean way.
Make zlib version detection cross-compile happy.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Romain Naour <romain.naour@openwide.fr>

autotools: update ax_cxx_compile_stdcxx_11.m4 to version 10

The ax_cxx_compile_stdcxx_11 macro bundled in thrift package is
brocken [1] and out of date.

Since Thrift actually doesn't use that particular C++11 feature,
make C++11 support optional.

[1] https://savannah.gnu.org/patch/index.php?8287

Fixes:
[thrift]
http://autobuild.buildroot.net/results/21e/21e3fff1e0d714f94ac7e621289d1a59bc02a05f/build-end.log
[host-thrift]
http://autobuild.buildroot.net/results/b89/b89ffc2bff699eb10bb6abd92369a43d4900354d/build-end.log

Signed-off-by: Romain Naour <romain.naour@openwide.fr>

This closes: #462
diff --git a/aclocal/ax_lib_event.m4 b/aclocal/ax_lib_event.m4
index cf6c4c2..d4dcdc9 100644
--- a/aclocal/ax_lib_event.m4
+++ b/aclocal/ax_lib_event.m4
@@ -75,7 +75,7 @@
           AC_LANG_PUSH([C])
           dnl This can be changed to AC_LINK_IFELSE if you are cross-compiling,
           dnl but then the version cannot be checked.
-          AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+          AC_LINK_IFELSE([AC_LANG_PROGRAM([[
           #include <sys/types.h>
           #include <event.h>
           ]], [[