vendor: update dependencies with github.com/kardianos/govendor

vendor/github.com/ethereum/ethash/.gitignore

@@ -1,12 +0,0 @@
-.idea/
-.DS_Store
-*/**/*un~
-.vagrant/
-*.pyc
-build/
-pyethash.egg-info/
-*.so
-*~
-*.swp
-MANIFEST
-dist/

vendor/github.com/ethereum/ethash/.travis.yml

@@ -1,23 +0,0 @@
-language: go
-go:
-  - 1.4.2
-
-before_install:
-  # for g++4.8 and C++11
-  - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
-
-  # Set up go-ethereum
-  - sudo apt-get update -y -qq
-  - sudo apt-get install -yqq libgmp3-dev 
-  - git clone --depth=10 https://github.com/ethereum/go-ethereum ${GOPATH}/src/github.com/ethereum/go-ethereum
-  # use canned dependencies from the go-ethereum repository
-  - export GOPATH=$GOPATH:$GOPATH/src/github.com/ethereum/go-ethereum/Godeps/_workspace/
-  - echo $GOPATH
-
-install:
-  # need to explicitly request version 1.48 since by default we get 1.46 which does not work with C++11
-  - sudo apt-get install -qq --yes --force-yes g++-4.8
-  - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 50
-  - sudo apt-get install -qq wget cmake bash libboost-test1.48-dev libboost-system1.48-dev libboost-filesystem1.48-dev nodejs python-pip python-dev valgrind
-  - sudo pip install virtualenv -q
-script: "./test/test.sh"