Remove ownerNode and ownerRule fields from stylesheet objects.

These prevent stylesheets being used in multiple contexts simultaneously.
Their values can be inferred from the context in which the stylesheet is used.

Replace use of ownerRule to backtrack in style selection with a (fixed-size)
stack of rules to process. This prevents crashes when a sheet that was 
previously imported somewhere is reused as a top-level sheet.

svn path=/trunk/libcss/; revision=10581

0 files changed, 0 insertions, 0 deletions