[ewg] ofed 1.2: backport changes

[Michael S. Tsirkin]

Hi!
To fix bug 247, I have moved backport implementation for
struct class sysfs functions from individual backport patches
to kernel_addons.

I then removed this code from individual core and ipath backport patches
for RHEL4 and SLES9 kernels, to avoid conflict.
With 8e99564fab97570e82212000cfd78ada7bcf45fe, core and ipath passes build.

However, since I do not own ipath hardware, please do DOA testing
on RHEL4 and SLES9 kernels.

Thanks,

-- 
MST