Small optimisation for zstats so that we dont do more expensive geoemtry operation when we know that cell value is null already.
Python formatting cleanups for zonal stats and raster layer tests
Keep the return value of Python init function alive while form open
Dismiss render cache when selection is modified (Fix #8346)
fix vc warnings
Fix help viewer bundled lib path on Mac with symlink
Initialize bool for showing label drop shadow debug rectangles
Clean up return from form Python init function
Workaround for GDAL ticket 5170, fixes #8356
[sextante]renamed wrong saga description file
[sextante] fixed proximity algorithm.

modified wrong test model
qgsexpression: lazy initialization of geometry calculator
raise Qt dependency to 4.5
- fix runtime gui warnings
- remove xpms
- also use qgis-icon-60x60.png as window icon on linux
labeling: fix missing fonts warning
debugging improvements
remove qgis.xpm from images.qrc (followup 8b5f22eef)
Fix some icon path warnings
use gdb only for crash reports (followup e4fed741)
add install of missing API headers