Improve debugging output.
revtex4-1.lyx: simplifications and fixed typos
pdfcomment.module: total revision

this module was not usable since the preamble stuff was missing and also almost all options. But many PDF-comment types are quite useless without options.
PDF-comment.lyx: description of the pdfcomment module

almost ready, except of the description of 2 comment types (will add them later this week)
pdfcomment.module: fix unnecessary options I just accidentally introduced
Makefile.am: add the new PDF-comment example file

damn Git. (should have been committed together with the example file)
pdfcomment.module: some fine-tuning

- use \requirePackage instead of \Usepackage
- name category properly
- reorder definitions
PDF-comment.lyx: finish description

- describe PDF-square and PDF-reply
- tune some minor other things
Fix the pdfcomment rewrite