Cell highlighting v2

[liquidaty]

This extension adds a command invoked by 'v' that runs a very simple pivot table

TO DO:

• change hyperlink formatting to only be on data rows
• remove row numbers from pivot table output
• add drill-down handler that will display source data drill-down
  • requires temp file ref counter so that if prior buffer uses temp file and is closed, the related temp file will still exist in order to run drill-down

[richiejp]

@liquidaty If I do a full build then I still don't seem to have the zsvutil library and it is mentioned as a feature coming soon, is this from another branch?

[liquidaty]

@richiejp if you do a full build it should make that but if not, we will look into it and in the meantime pls try:
make -C app install-util-lib

[richiejp]

@liquidaty starting from a clean environment and doing make build -j16 DEBUG=1 then make app/ext_example all -j16 DEBUG=1 does not work. However make -C app install-util-lib -j16 DEBUG=1 did allow the example to be built as suggested, thanks!