Log Message:
Update to HPLIP 3.12.4:

Changes:
- Uninstall Support:
  User can uninstall complete HPLIP package by running "hp-uninstall"
  command
- Upgrade Support:
  Settings can be configured using "hp-systray - > settings - > Update
  settings" for notification of newer version of HPLIP release.
  User can also upgrade to latest version by running "hp-upgrade"
  command
- Queue Analyzer:
  Print/Fax queues can be analyzed by running "hp-diagnose-queues"
  command or by clicking on "Diagnose Queues" from toolbox

- Set the fax-type = 4 for hp laserjet 1522nf mfp printer
- Added the code check for separating the black and color data from the
  ghostscript's raster output for devices supporting CMYK color space to
  fix the blurry
  printing issue on HP LaserJet CP1025 and CP1025nw
- Added three new features : Uninstallation , Upgradation, Print/Fax
  queue Analysis

- Fixed the issue of digital signature mismatch for the plugin download
  by switching off the cache while downloading the plugin from the server

New Printers:
- HP LaserJet Pro 300 color MFP M375nw
- HP LaserJet Pro 400 color MFP M475dn
- HP LaserJet Pro 400 color MFP M475dw
- HP LaserJet Pro 300 color M351a
- HP LaserJet Pro 400 color M451nw
- HP LaserJet Pro 400 color M451dn
- HP LaserJet Pro 400 color M451dw
- HP Color LaserJet CP1217
- HP LaserJet Pro P1108 Printer
- HP LaserJet Pro P1106 Printer
- HP LaserJet Pro P1102s Printer
- HP LaserJet Pro CP 1025nw Color Printer
- HP LaserJet Pro CP 1025 Color Printer
- HP OfficeJet 6100 ePrinter - H611a
- HP Officejet 6600 e-All-in-One Printer - H711a
- HP Officejet 6700 Premium e-All-in-One Printer - H711n
- HP LaserJet Pro P1102s Printer
- HP LaserJet Pro M1132s Multifunction Printer

Bugs: (from Launchpad)
180555 - Duplex scanning support for
         HP OfficeJet Pro 8500 a910g
         HP OfficeJet Pro 8600 e-AiO N911a
         HP OfficeJet Pro 8600 Plus e-AiO N911g
934180,707655 - Fixed the fax setup issue in
                HP OfficeJet Pro 8600
                Officejet 6500
889306,931006 - Fixed the blurry printing issue on HP LaserJet CP1025
	and CP1025nw
191165 - Updated the manual installation instructions for
	CentOS,OpenSUSE,Fedora,Mandriva and LinuxMint
790238 - Added fax support for HP LaserJet 1522nf MFP
192334 - Added Envelop C5 Paper Size for envy 110
942281 - Batch-scan supported for scanimage
927708 - Attribute Error: ScanDevice instance has no attribute
	'last_opt'
905962,923887,962297 - Wireless configuration using hp-wificonfig
	command is fixed in
	   HP Deskjet 3000 J310 series
	   HP Deskjet 3050 J610 series