Added a bootstrap.sh

Signed-off-by: jaseg <jaseg@jaseg.net>
Merge pull request #8 from jaseg/master

Added an autogen.sh
Argh, don't cut off long application extensions.

Stupid uint8_t.
When reading unknown application extension, preserve packet boundaries.

This lets us correctly pass through XMP extensions despite their
crazy format. Problem reported by `ata4`.
Correct bad interaction between --position and --crop.

Reported by Bryan Stillwell.
Gifview: when animating, never display frame numbers.
Merge branch 'master' into t
Remove debug printout.
Merge branch 'master' into t