* TODO: describe problems with libltdl

* TODO: describe problems with libltdl
* ltmain.in (ILD): tidy up, add comments, remove dead code,
  merge duplicate code
* ltmain.in (ILD): don't touch newdependency_libs after scan or
  dlopen pass
* ltmain.in (ILD): don't dlpreopen dependency_libs of a dlopened
  module (remove absolutely wrong quick hack)
* ltmain.in (ILD): remove comments about duplicate removal
* ltmain.in (ILD): build a static-only module if it has
  static libraries in its dependencies (so that libltdl can
  safely load dependency_libs)
* ltmain.in (argument parsing): prefix comparsions of -l args with X,
  replace -lc with `-framework System' _after_ the ILD passes
* ltmain.in (deplibs_check): use portable test syntax
* ltmain.in (help): document -prefer-[non-]pic flags
* ltmain.in: improve readablity by adding some comments,
  rename uninst_* to notinst_* (more adequate name)