Patch: New section "Invoking Guile" for chapter "Programming in Scheme"

[Mark Harig]

Here is a set of patches to add the new section "Invoking Guile" to the chapter "Programming in Scheme."

CAVEAT: Please review the subsection "Environment Variables" thoroughly before committing this change.

This subsection is "incorekt and incomplet."  The list of variables is my *guess* based on looking through the

NEWS file.  Some variables might need to be deleted from the list and some missing ones might need to be

added.  The descriptions of the variables are also my guess (when I could make a guess) based on

descriptions I could find.  Please change or delete these variables or their descriptions as needed.

Please find attached five (git format-patch) patch files (one for each changed file).  I am also including the

plain-text version of the new section "Invoking Guile" so that the content can be more easily reviewed

without having to navigate the texinfo macros.

I have attempted to check the .texinfo files by reviewing both the .info and .dvi (TeX) files that can be

generated from the .texinfo files.

0001-Signed-off-by-Mark-Harig-idirectscm-aim.com.patch
Description: Text Data

0002-Signed-off-by-Mark-Harig-idirectscm-aim.com.patch
Description: Text Data

0003-doc-ref-guile-invoke.texi-node-Invoking-Guile-Initia.patch
Description: Text Data

0004-doc-ref-indices.texi-Minor-corrections-to-the-text-a.patch
Description: Text Data

0005-Corrected-some-cross-references-that-had-parentheses.patch
Description: Text Data

invoking-guile.txt
Description: Text document