Add ./dev/... to multiple build targets.

Adds ./dev/... to forcefull, full, & presubmit.

Change-Id: I64d947b92dcda09ceb6bd2c536f1b698e2367cc0
server/image: properly set image format.

The value of format was empty and causing cr2 and jpeg images to fall through
to the the default case, encoding thumbnails as PNG.

This change sets the default case as jpeg, and ensures that cr2 is encoded as
jpeg.  Png files now have their own explicit branch in the switch.

Tested by uploading a cr2, jpeg and png file to camlistore, then viewed the
mime type in the thumbnail response for each.

Change-Id: Ibe4400f220014b3fd72d9ae420c7d60c2f8cb33a
server: set Content-Type on debug message.

It is currently autodetecting as text/plain which prevents chrome from
rendering content as HTML.

Change-Id: I58b99bf4d8719f37269937001461bdf71610d786
Merge "server: set Content-Type on debug message."
Merge "server/image: properly set image format."
Merge "Add ./dev/... to multiple build targets."
Handle GET and HEAD the same in more (all?) places.

Change-Id: I486a95f0a6fc127d17dcf0abeb94eab292980156
Convert more ReceiveBlob into blobserver.Receive or blobserver.ReceiveNoHash

Change-Id: I9199555324b617167a6062a8b55ed09b449bae4f
Merge branch 'master' of https://camlistore.googlesource.com/camlistore