FLUME-703: Make default thrift compiler location based off of THRIFT_HOME env variable
FLUME-703: Make default thrift compiler location based off of THRIFT_HOME env variable

The maven build requires thrift to live in a particular location or be specified by
the thrift.executable property at the command line. For example 'mvn
-Dthrift.executable=/usr/local/bin/thrift'. This patch will attempt to use a
THRIFT_HOME env variable as a default location for thrift. In the previous example
THRIFT_HOME would be /usr/local.

From: Alejandro Abdelnur <tucu00@gmail.com>

git-svn-id: a99f83eed5fb73f0a29a082c88d77cd96cb68678@1155962 13f79535-47bb-0310-9956-ffa450edef68

tmgstevens/flume,tinawenqiao/flume,tinawenqiao/flume,lfzCarlosC/test,iaiengxia/flume,szaboferee/flume,lfzCarlosC/test,szaboferee/flume,tinawenqiao/flume,iaiengxia/flume,tmgstevens/flume,szaboferee/flume,iaiengxia/flume,tmgstevens/flume,iaiengxia/flume,tmgstevens/flume,tinawenqiao/flume,szaboferee/flume,lfzCarlosC/test,lfzCarlosC/test