brlaser version 6.2.6

Owl-Maintain brlaser Fork

New printer entries:
Brother FAX-2840
Brother HL-2260
Brother HL-L2335D series
Brother MFC-7860DW
Brother MFC-9160

Notes:

• The repository has been cleaned up
  • All entries brlaser.drv.in and README.md both follow a set naming convention
  • Commits where "rewritten correctly" to follow the standard conventions and then squashed