Mine

nacho@saturn:...ffice.org2.3/program$ /opt/openoffice.org2.3/program/swriter 2>&1 | grep xin_shim
00895: file=/lib/secure/xin_shim.so;  preloading
00895: file=/lib/secure/xin_shim.so  [ ELF ]; generating link map
00895: file=/lib/secure/xin_shim.so;  analyzing  [ RTLD_LAZY RTLD_GLOBAL RTLD_WORLD RTLD_NODELETE ]

nacho@saturn:~$ cat xin_shim.c 

void XineramaGetState(void *p)
{
        return;
}
void XineramaGetInfo(void *p)
{
        return;
}