First real use of API versioning code, H5E routines switched to use new API versioning scheme. Tested on: Mac OS X/32 10.4.10 (amazon) FreeBSD/32 6.2 (duty) FreeBSD/64 6.2 (liberty) Linux/32 2.6 (kagiso) Linux/64 2.6 (smirom) Solaris/32 5.10 (linew)