Add NODE_BLOOM service bit and bump protocol version

Lets nodes advertise that they offer bloom filter support explicitly.
The protocol version bump allows SPV nodes to assume that NODE_BLOOM is
set if NODE_NETWORK is set for pre-70002 nodes.

Also adds an undocumented option to turn bloom filter support off for
testing purposes. Nodes attempting to use bloom filters are immediately
dropped so as to not waste their bandwidth.
Merge branch 'node-bloom-service-bit' of github.com:petertodd/bitcoin
Replaced simple occurrences of "Bitcoin" with "Dogecoin" in translation files.
Reworked English and French language translations to reflect Dogecoin instead of Bitcoin.
additional Dogecoin 1.6 changes
change currency three-letter-code to DOGE

also change length of currency amounts in UI
document -bloomfilters option

(cherry picked from commit dogecoin/dogecoin@63bd740c8ab8dd9a0a07fb038cd595528eb3d3aa)
Replaced Dogecoin Core branding in translations with Inutoshi.
Merge pull request #2 from rnicoll/translation

Translation file update from Bitcoin to Dogecoin/Inutoshi
Update bitcoinunits.cpp

Adding a name for the smallest possible unit. :>
Update bitcoinunits.cpp
Update bitcoinunits.h

Adding Koinu @leofidus :D
add megadoge and kilodoge as selectable units
remove millidoge and microdoge units

Users who have set them as display unit fall back to Doge with this change
Update README.md
Merge branch 'master' of github.com:inutoshi/inutoshi
add pgp keys for gitian-downloader

At the current state of the build system this mostly serves as a somewhat
trusted place to store the keys (note the signed commit), in the future
this will allow verifying signed builds
Updated port numbers to reflect Dogecoin port numbers.
Replaced simple references to Bitcoin, with Dogecoin.
Correct naming of application and packages from Bitcoin to Dogecoin.