update libxl/ocaml patches
merged
merged new libxl/ocaml patches from upstream
libxl-videoram.patch was already in
Merge by b2bmerge!
Move ocaml gntshr/gnttab patch to "patches for upstream"
Add .patch extension to ocaml gntshr/gnttab patch

--HG--
rename : ocaml-gntshr-gnttab => ocaml-gntshr-gnttab.patch
Fix ocaml gntshr/gnttab patch such that it applies without fuzzing
Manual resolution: b2bmerge needed help.
Fix after faulty merge.
Futher fix after merge
Fix local-ocaml-gnt-installables.patch so it applies again.
b2bmerge needed help merging series file.