Minor improvements to the release process

Instruct people to "git fetch" so that if this is their 2nd+ gitian build they will have a fresh bitcoin repo.
Instruct people to add all the known pgp keys to their keyring so that gverify will print more useful info.

doc/release-process.md

@@ -41,6 +41,7 @@ Check out the source code in the following directory hierarchy.
 	pushd ./bitcoin
 	export SIGNER=(your Gitian key, ie bluematt, sipa, etc)
 	export VERSION=(new version, e.g. 0.8.0)
+	git fetch
 	git checkout v${VERSION}
 	popd
 
@@ -83,25 +84,16 @@ NOTE: Offline builds must use the --url flag to ensure Gitian fetches only from
 ```
 The gbuild invocations below <b>DO NOT DO THIS</b> by default.
 
-###Build (and optionally verify) Bitcoin Core for Linux, Windows, and OS X:
+###Build and Sign Bitcoin Core for Linux, Windows, and OS X:
 
 	./bin/gbuild --commit bitcoin=v${VERSION} ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
 	./bin/gsign --signer $SIGNER --release ${VERSION}-linux --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
-	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-linux ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
-	mv build/out/bitcoin-*.tar.gz build/out/src/bitcoin-*.tar.gz ../
 
 	./bin/gbuild --commit bitcoin=v${VERSION} ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
 	./bin/gsign --signer $SIGNER --release ${VERSION}-win-unsigned --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
-	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-win-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
-	mv build/out/bitcoin-*-win-unsigned.tar.gz inputs/bitcoin-win-unsigned.tar.gz
-	mv build/out/bitcoin-*.zip build/out/bitcoin-*.exe ../
 
 	./bin/gbuild --commit bitcoin=v${VERSION} ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
 	./bin/gsign --signer $SIGNER --release ${VERSION}-osx-unsigned --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
-	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-osx-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
-	mv build/out/bitcoin-*-osx-unsigned.tar.gz inputs/bitcoin-osx-unsigned.tar.gz
-	mv build/out/bitcoin-*.tar.gz build/out/bitcoin-*.dmg ../
-	popd
 
   Build output expected:
 
@@ -111,6 +103,27 @@ The gbuild invocations below <b>DO NOT DO THIS</b> by default.
   4. OS X unsigned installer and dist tarball (bitcoin-${VERSION}-osx-unsigned.dmg, bitcoin-${VERSION}-osx64.tar.gz)
   5. Gitian signatures (in gitian.sigs/${VERSION}-<linux|{win,osx}-unsigned>/(your Gitian key)/
 
+###Verify other gitian builders signatures to your own. (Optional)
+
+  Add other gitian builders keys to your gpg keyring
+
+	gpg --import ../bitcoin/contrib/gitian-downloader/*.pgp
+
+  Verify the signatures
+
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-linux ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-win-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-osx-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
+
+###Move the outputs to the correct directory
+
+	mv build/out/bitcoin-*.tar.gz build/out/src/bitcoin-*.tar.gz ../
+	mv build/out/bitcoin-*-win-unsigned.tar.gz inputs/bitcoin-win-unsigned.tar.gz
+	mv build/out/bitcoin-*.zip build/out/bitcoin-*.exe ../
+	mv build/out/bitcoin-*-osx-unsigned.tar.gz inputs/bitcoin-osx-unsigned.tar.gz
+	mv build/out/bitcoin-*.tar.gz build/out/bitcoin-*.dmg ../
+	popd
+
 ###Next steps:
 
 Commit your signature to gitian.sigs: