Added fourth latex pass to full build in Rakefile
(sometimes labels change even after the third pass and the Makefile has long had four passes)
Reformatting and revision of LGPL complete:
- share use case finder with GPL
- split between 2.1 and 3.0
- add re-link clause to unmodified embedded binary distribution
- add requirement to include license elements in copyright dialog for LGPL-3.0
- remove requirement to include license element in copyright dialog for LGPL-2.1
  from discussion
- add relicensing option to LGPL-2.1 for distribution of modified programs
- explain relicensing option in discussion