Bug#654428: blender: FTBFS: uses i386/amd64 specific register definitions on all architectures

[Sergey Sharybin]

Ok, looked through logs. Commited fix (rev43718 in our svn trunk)
which should make some platforms work nicer (at least fix currently
reported compilation errors). This should help on spark, s390x, s390,
mips platforms.

Still can see some issues related on REG_EIP and mcontext_t things.
Not sure if that build errors happens with 0011-fix_FTBFS_with_libmv
applied?

Also think error of hurd-i386 should be fixed. At least this function
has got valid return value in current trunk.

Probably compilation error on powerpc is also fixed in svn rev43719.

Would be nice to check for updated build logs after all this my changes.

-- 
With best regards, Sergey Sharybin