add toolchain def for JavaSE-1.6 to satisfy 3 plugins that specify it (this may require builders to supply a corresponding toolchains.xml)
add toolchain def for JavaSE-1.6 to satisfy 3 plugins that specify it
(this may require builders to supply a corresponding toolchains.xml)

rrimmana/birt-1,Charling-Huang/birt,rrimmana/birt-1,rrimmana/birt-1,Charling-Huang/birt,rrimmana/birt-1,sguan-actuate/birt,Charling-Huang/birt,sguan-actuate/birt,sguan-actuate/birt,Charling-Huang/birt,Charling-Huang/birt,sguan-actuate/birt,rrimmana/birt-1,sguan-actuate/birt