Defer allocation of GIF decoding tables/stack.

WebKit creates many image readers but will only retrieve the dimensions
until the image itself is actually needed (i.e appears in the viewport.)

This avoids allocating 16kB per GIF image until it's time to actually
decode it.

Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>

path: root/tests/tests.pro

TEMPLATE = subdirs
SUBDIRS = auto \
        benchmarks