[Pixman] alphamap and blitters-test fail

[Dave McCooey]

System:  Dual PowerPC G4 Macintosh, Mac OS X version 10.4.11

========================================
    pixman 0.32.6: test/test-suite.log
========================================

# TOTAL: 27
# PASS:  25
# SKIP:  0
# XFAIL: 0
# FAIL:  2
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: alphamap
==============


Wrong alpha value at (14, 34). Should be 0xdf; got 0xff. Source was  
0xdf, original dest was 0x0
src: a2r10g10b10, alpha: a8, origin 0 0
dst: a8r8g8b8, alpha: a8, origin: 0 0


FAIL: blitters-test
===================

blitters test failed! (checksum=97F287CB, expected E0A07495)