调整获取堆栈的宏的保护
libxml2为android编译调整
libev为android编译调整
yajl为android编译调整
Merge branch 't/3rdTools/libxml2' into refs/top-bases/t/support/dr2
Merge branch 't/3rdTools/yajl' into refs/top-bases/t/support/dr2
Merge branch 't/3rdTools/libev' into refs/top-bases/t/support/dr2
Merge commit 'refs/top-bases/t/support/dr2' into t/support/dr2