Make VBF_Fetch() take an objcore* to the ims-candidate.
Put a parallel ims_oc next to ims_obj.
Use SI case for modifiers, fix spelling of (E)xa
Add table of (future) object attributes
Implement a first erzats version of ObjGetattr()
Use ObjGetattr() for OA_ESIDATA
Use ObjGetattr() for OA_ESIBITS
Fully convert obj->vxid to an obj_attr
Make obj->gzip_bits a full OA also
Make obj->last_modified an object_attribute
Restrict charset used for file_id.

Suggested by:	scoof
Update description

obj.{grace,ttl} are read-only.
Fix printf formats for MacOS 10.9.4

Reported by:	Meng Zhang
Bump the limit on how many groups we can deal with.
Default the http timeout to half of the total testduration.

Fixes #1563
Fix breakage

Un-static-fy vtc_maxdur
Ensure bereq changes are not lost across vcl_backend_xxx methods

Add std.rollback() to rollback req or bereq and mark the builtin rollback
as deprecated.

Original diff by Nils Goroll. Tweaks and reworked after phk comments
by me.

Fixes #1512
More coverage of VRT variables