Add VDT headers and cmsRunVDT application.
Rename customise
Fix customise.
Merge pull request #3161 from ktf/rename-customise2

Misc -- Rename customise
Merge pull request #3066 from ktf/cleanup-vdt

Switch to vdt_headers toolfile
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X