devcam server: sqlite support.

Also makes kv use CAMLI_DBNAME for the index file instead of
CAMLI_KVINDEX_FILE; one less env var to care about.

http://camlistore.org/issue/225

Change-Id: I954cc2e5ff8ed1bb213435af18f1ecc2948c4e59
Merge "devcam server: sqlite support."
osutil: take into account env var for default secret ring

http://camlistore.org/issue/227

Change-Id: I40eac298d7d5d74760be65d9e13d531b562830b9
Merge "osutil: take into account env var for default secret ring"
zappy: make it pure Go so it builds on windows

Change-Id: I46c3c74db668b988c295ec3342d1b876f2b63e79
devcam test: generate keyblob with devcam put init

The integration tests run by devcam test require a
GPG keyblob in the default location (for camput), and
we do not track in git such a keyblob.
This change allows devcam test to create the keyblob
with devcam put init before running the tests.

Also, devcam server is now using CAMLI_KEYID instead
of hardcoding the key id in the dev server config file.

Change-Id: I030b88c9a9321016fedb62424e0e707621206922
Merge "devcam test: generate keyblob with devcam put init"
make.go: don't use GOBIN; copy binaries out from temp GOPATH/bin by hand

Fixes http://camlistore.org/issue/229

Change-Id: I7769330e0982a92d4fa90bbce44330b6a473ee0b