Update to xf86-video-mga-1.4.8.

1.4.8:
Bug #13926: Unbreak Xinerama.
G200SE-A can't cope with bigger than 1600x1200.
Don't build or call init_dri if XF86DRI is undefined
Unmap the same size that was mapped with pci_device_map_range
Use pci_device_map_range() instead of pci_device_map_region().

1.4.7:
Fix various timing bugs on the G200SE.
Disable MTRR support for PCIE G200SE cards, as it tickles hardware bugs.
Default mode on G200SE of 1024x768 @ 16bpp.
Change minimal frequency guess from 12 to 16MHz
Add Xv support for Millennium II chips
Current state of MGA driver modified to work with the xserver
Store the pci_device pointer passed into MGAPciProbe instead of
Pass the correct pointer to pci_device_cfg_write_bits.
Convert to new pci_device_cfg_write_u* interface.
Refactor memory map / unmap functions.
Ensure the result of MGAMapMem is checked.
Code refactoring in MGAScreenInit.
Add info for offset 116 in PInS version 5.
Merge PCI-rework support and "classic" PCI interface support into one tree
Set pScrn to NULL before calling xf86ConfigPciEntity.
Use XSERVER_LIBPCIACCESS to detect pci-rework.
Replaced some more magic values with register names.
Bug #9448: Actually write the C2STARTADD0 register.
Fixed a typo in a debug message.
Fixed a typo that caused MGAREG_C2OFFSET to be set to a bad value.
Sync after UploadToScreen.
Removed the debug messages for solid and copy ops.
Make DRI initialization work when using EXA.
On G550, do A8 adds in hardware.
Added memcpy-based DownloadFromScreen implementation.
Bug #4249: Further increase the minimum dot clock.
Fixed major blending and compositing breakage.


(tnn)