USER.skip_servers option to skip blackhole servers.
Disable crab.history file.
Better parseRange2.
rssLimit 3GB.
exeOutLines limit 3k -> 20k.
Improved search for data dirs; USER.jmt_skip_input_files and USER.jmt_externals_hack.
Use PRODCOMMON_0_12_18_CRAB_63_jmt.
Notes for CRAB_2_10_5_patch1_jmt.