Simplify the Travis-CI configuration.

Even though Travis does NOT offer a consistent Go platform, I want
to nevertheless simplify the scaffolding scripts around it to make
it easier for other folks to perform pull requests, reviews, etc.
while letting the tests run.

.travis.yml

@@ -1,27 +1,9 @@
-language: erlang
+language: go
 
-# N.B.(matttproud): Travis CI now includes the Go runtime packages made and
-#                   maintained by who-knows-whom.  They conflict with the
-#                   hermeticness of the test environment and are thusly
-#                   removed.
 before_install:
  - sudo apt-get install bzr >/dev/null 2>&1
- - sudo apt-get remove -y --force-yes --purge golang || true
- - sudo apt-get remove -y --force-yes --purge golang-stable || true
- - sudo apt-get remove -y --force-yes --purge golang-weekly || true
- - sudo apt-get remove -y --force-yes --purge golang-tip || true
- - test ! -x "$(which go)" || (echo "Go is still present: $(which go)" ; exit 1)
 
-install:
+before_script:
- - hg clone -u release https://code.google.com/p/go "${HOME}/go" >/dev/null 2>&1
- - cd "${HOME}/go/src" && ./make.bash >/dev/null 2>&1
- - mkdir -p "${HOME}/src" || true
- - mkdir -p "${HOME}/bin" || true
- - mkdir -p "${HOME}/pkg" || true
- - export GOPATH="${HOME}"
- - export PATH=${PATH}:${HOME}/go/bin
- - ln -s "${HOME}/builds/matttproud/golang_instrumentation" "${HOME}/src/golang_instrumentation"
- - go get -v launchpad.net/gocheck >/dev/null 2>&1
  - go get -v github.com/matttproud/golang_instrumentation
 
 script: