Add missing limits.h header (fixes Solaris/Sparc).
Add missing limits.h header (fixes Solaris/Sparc).

git-svn-id: 35e0c45cba356f0e2c1fbea81384ac7531a87101@787902 13f79535-47bb-0310-9956-ffa450edef68

apache/santuario-cpp,apache/santuario-cpp,apache/santuario-cpp