* doc/libtool.texi (link mode): documentation for -module updated

* doc/libtool.texi (link mode): documentation for -module updated
* ltconfig.in: fast-install mode doesn't work for
  hardcode_into_libs=yes
* ltmain.in: bugfix: "-dlopen self [-all]-static" wouldn't use
  dlopen_self_static, automatically enable -export-dynamic when
  using "-dlopen self",	always make run-paths absolute,
  ignore -lc only on platforms that don't have such a library,
  cleanups in the ILD code, find even installed libtool libraries
  that were moved, before generating the DLL-import library we need
  to set libname, improved hardcoding of shlibpath for libraries,
  don't generate an installable pseudo-library for convenience
  libraries, bugfix: export_symbols would be removed immediately
  before it is used