More adaptors use bind_param()
dnafrag_id must be defined to get other chr prop

Otherwise, the base Locus object would "fail fetching the data from other
sources"
input_clusterset_id default should be considered like undef
Fixed the error message if the command failed

Use "die" instead of "throw" (we don't need the stack).
stdout can also be useful for some programs
Added missing error message
param_exists() doesn't work well'
Merge branch 'master' of github.com:Ensembl/ensembl-compara

* 'master' of github.com:Ensembl/ensembl-compara:
  Added a module to get CAFE tree as hashes to serialize
  We make sure we don't have a dup node
  We make sure we don't have a dup node
  PhyloXMLWriter now is base class of specific CAFE, GeneTree and GenomicAlignTree writers