Merge pull request #3437 from karalabe/update-ci-go1.7.4

travis, appveyor: build with Go 1.7.4

.travis.yml

@@ -13,15 +13,15 @@ matrix:
       go: 1.6.2
     - os: linux
       dist: trusty
-      go: 1.7
+      go: 1.7.4
     - os: osx
-      go: 1.7
+      go: 1.7.4
 
     # This builder does the Ubuntu PPA and Linux Azure uploads
     - os: linux
       dist: trusty
       sudo: required
-      go: 1.7
+      go: 1.7.4
       env:
         - ubuntu-ppa
         - azure-linux
@@ -55,7 +55,7 @@ matrix:
 
     # This builder does the OSX Azure, Android Maven and Azure and iOS CocoaPods and Azure uploads
     - os: osx
-      go: 1.7
+      go: 1.7.4
       env:
         - azure-osx
         - mobile

appveyor.yml

@@ -22,8 +22,8 @@ environment:
 
 install:
   - rmdir C:\go /s /q
-  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.7.3.windows-%GETH_ARCH%.zip
-  - 7z x go1.7.3.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
+  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.7.4.windows-%GETH_ARCH%.zip
+  - 7z x go1.7.4.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
   - go version
   - gcc --version