Reduce size of PDF files when inc. in *TeX docs (issue 194090043 by address@hidden)

[pkx166h]

Reviewers: knut_petersen_t-online.de,

Message:
Added Knut as I 'own' this patch while it is being reviewed.

James

Description:
Reduce size of PDF files when inc. in *TeX docs

Issue 4251

This changes the way lilypond uses fonts to draw glyphs.

It avoids to used glyphshow for all emmentaler glyphs and
adds encoding vectors to the emmentaler fonts before they
are used. It also changes the ghostscript parameters used
to generate pdfs from postscript code.

These changes help to reduce pdf file sizes if you include
lilypond snippets in *TeX documents. The pdfs generated by
a patched lilypond and *tex themselves are _much_ bigger,
but if you run ghostscript and pdfsizeopt.py on those
files they implode.

added a command line option
--bigpdf / -b, and documented that option in the german
and english versions of usage.pdf .

Please review this at https://codereview.appspot.com/194090043/

Affected files (+1023, -29 lines):
  M Documentation/de/usage/running.itely
  M Documentation/usage/running.itely
  M lily/general-scheme.cc
  M lily/global-vars.cc
  M lily/include/main.hh
  M lily/main.cc
  A ps/encodingdefs.ps
  M scm/backend-library.scm
  M scm/framework-ps.scm
  M scm/output-ps.scm