Merge pull request #2183 from s9e/ticket/12302

Upgrade all composer.phar to 1.0.0-alpha8

* s9e/ticket/12302:
  [ticket/12302] Added `--no-dev` to composer call in build.xml
  [ticket/12302] Updated composer.phar to 1.0.0-alpha8

build/build.xml

@@ -221,7 +221,7 @@
 							command="git archive ${revision} composer.phar | tar -xf - -C ${dir}"
 							checkreturn="true" />
 						<exec dir="${dir}"
-							command="php composer.phar install"
+							command="php composer.phar install --no-dev"
 							checkreturn="true"
 							passthru="true" />
 						<delete file="${dir}/composer.phar" />