Can a test to see if the SINO_T macro is already defined be wrapped around the
two definitions of the macro in include/includes.h?

OpenVMS has two different ino_t types, a 48 bit version for OpenVMS VAX and a 64
bit version for OpenVMS 8.2 and later on Alpha and Itanium.

By checking to see if the macro is already defined, the 48 bit version of the
SINO_T for OpenVMS can be defined in the config.h file.

Example:

#ifndef SINO_T
#ifdef LARGE_SMB_INO_T
#define SINO_T(p, ofs, v) (SIVAL(p,ofs,(v)&0xFFFFFFFF), SIVAL(p,(ofs)+4,(v)>>32
#else
#define SINO_T(p, ofs, v) (SIVAL(p,ofs,v),SIVAL(p,(ofs)+4,0))
#endif
#endif