Bump JGit version to 3.7.1.201504261725-r
Bump JGit version to 3.7.1.201504261725-r

This version fixed JGit regression, causing severe (>10x)
performance degradation on huge repositories (>2GB) on git
push and CPU consumption explosion during replication: [1].

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=465509

Bug: Issue 3300
Change-Id: I6b1fa985fa3738801d3fa27d690a1c02c1afc1db

qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,renchaorevee/gerrit,supriyantomaftuh/gerrit,quyixia/gerrit,Distrotech/gerrit,quyixia/gerrit,quyixia/gerrit,thesamet/gerrit,GerritCodeReview/gerrit,jackminicloud/test,Seinlin/gerrit,joshuawilson/merrit,hdost/gerrit,supriyantomaftuh/gerrit,Distrotech/gerrit,gerrit-review/gerrit,TonyChai24/test,MerritCR/merrit,pkdevbox/gerrit,supriyantomaftuh/gerrit,GerritCodeReview/gerrit,Seinlin/gerrit,hdost/gerrit,Seinlin/gerrit,Distrotech/gerrit,supriyantomaftuh/gerrit,supriyantomaftuh/gerrit,MerritCR/merrit,thesamet/gerrit,pkdevbox/gerrit,TonyChai24/test,renchaorevee/gerrit,hdost/gerrit,quyixia/gerrit,netroby/gerrit,supriyantomaftuh/gerrit,Seinlin/gerrit,TonyChai24/test,WANdisco/gerrit,gerrit-review/gerrit,qtproject/qtqa-gerrit,netroby/gerrit,MerritCR/merrit,Distrotech/gerrit,Seinlin/gerrit,renchaorevee/gerrit,netroby/gerrit,GerritCodeReview/gerrit,gerrit-review/gerrit,pkdevbox/gerrit,joshuawilson/merrit,qtproject/qtqa-gerrit,netroby/gerrit,quyixia/gerrit,jackminicloud/test,WANdisco/gerrit,pkdevbox/gerrit,quyixia/gerrit,qtproject/qtqa-gerrit,hdost/gerrit,TonyChai24/test,MerritCR/merrit,joshuawilson/merrit,quyixia/gerrit,MerritCR/merrit,netroby/gerrit,Distrotech/gerrit,joshuawilson/merrit,jackminicloud/test,MerritCR/merrit,thesamet/gerrit,jackminicloud/test,jackminicloud/test,TonyChai24/test,qtproject/qtqa-gerrit,pkdevbox/gerrit,thesamet/gerrit,hdost/gerrit,joshuawilson/merrit,GerritCodeReview/gerrit,WANdisco/gerrit,supriyantomaftuh/gerrit,pkdevbox/gerrit,gerrit-review/gerrit,WANdisco/gerrit,thesamet/gerrit,TonyChai24/test,qtproject/qtqa-gerrit,gerrit-review/gerrit,Distrotech/gerrit,MerritCR/merrit,GerritCodeReview/gerrit,joshuawilson/merrit,GerritCodeReview/gerrit,netroby/gerrit,thesamet/gerrit,renchaorevee/gerrit,hdost/gerrit,gerrit-review/gerrit,Distrotech/gerrit,thesamet/gerrit,joshuawilson/merrit,Seinlin/gerrit,netroby/gerrit,GerritCodeReview/gerrit,renchaorevee/gerrit,WANdisco/gerrit,jackminicloud/test,WANdisco/gerrit,renchaorevee/gerrit,qtproject/qtqa-gerrit,jackminicloud/test,TonyChai24/test,Seinlin/gerrit,joshuawilson/merrit,gerrit-review/gerrit,MerritCR/merrit,pkdevbox/gerrit,renchaorevee/gerrit,hdost/gerrit