Added maven-profiles to enable switching between yarn and non-yarn hadoop
Remove pact-examples dependency in pact-clients.

pact-clients was dependent on pact-examples in order to run
LocalExecuterTest. The problem with that was, that this prevented the
use of the LocalExecuter within the pact-examples module (circular
dependency). Hence the LocalExecuterTest was moved to the pact-test
module and the pact-examples depedency was removed from pact-clients.
First part of fix to exclude pact-hbase when hadoop v1 is used
Added extra profile entries in the pom.xml files in order to fix the hadoop_v1 compilation problems.
Merge pull request #1 from aalexandrov/hadoop-maven-profiles

Fix from Alexander, so that pact-hbase is only included if yarn is used (because it is not compatible with hadoop v1)
Made the hadoop_v1 profile active by default.
Moved hadoop.version property to the profiles.
Merge pull request #2 from aalexandrov/hadoop-maven-profiles

Made the hadoop_v1 maven profile active by default (hadoop version 1.2.1)
Fix for a null pointer exception in new memory buffer
Merge pull request #70 from carabolic/master

Remove pact-examples dependency in pact-clients.
Travis build matrix for different profiles

updated contributers

added comment for eclipse users
Merge branch 'andrehacker-hadoop-maven-profiles'
Merge remote-tracking branch 'origin/master' into gith_pact_compiler_bug_tlabs

I've done this merge to have a recent version of ozone for the telekom usecases