check for /usr/local/lib/libltdl.* and die if present
5.4.33
use full git command, not just co
Merge remote-tracking branch 'origin/5_4_mountainlion' into 5_4_yosemite

* origin/5_4_mountainlion:
  use full git command, not just co
  5.4.33
  check for /usr/local/lib/libltdl.* and die if present