glr.c: remove (broken) support for YYPRINT.

YYPRINT uses yytoknum which glr does not define.  Since YYPRINT
is considered obsolete, and did not work, don't fix its support,
remove it from glr.c.

* data/c.m4 (yy_symbol_value_print): Use YYPRINT only for yacc.c.
* TODO: Done.
c.m4: better newline control with b4_parse_param_use.

* data/c.m4: Use m4_ifvaln instead of m4_ifval where
applicable.
(b4_parse_param_use): Switch order between two nested
"if"s to avoid useless empty lines.
Adjust callers to avoid useless lines.
doc: style changes.

* doc/bison.texinfo: Avoid line width issues with TeX.
Upgrade ancient messages.
Move some comments to better looking places.
Add more @group.
(Mfcalc Symbol Table): Reduce variable scopes.
Prefer size_t for sizes.
Prefer declarations with an initial value.
Fix a @group environment.
doc: use only @example, not @smallexample.

* doc/bison.texinfo: Convert all @smallexamples into @examples.
Adjust layout where needed.
doc: reformat grammar snippets.

* doc/bison.texinfo: Convert the grammar examples to
use a narrower style.  This helps fitting into the
@smallbook constraints.
http://lists.gnu.org/archive/html/bison-patches/2012-03/msg00011.html
doc: save width.

* doc/bison.texinfo (Language and Grammar): Use the same
layout for an example in all the versions, i.e., keep
as general case what used to be used only for Info.
doc: stmt, not stmnt.

* doc/bison.texinfo: s/stmnt/stmt/g.  This is a
much more common abbreviation for "statement".
doc: spell check.

* doc/bison.texinfo: here.
doc: update the --verbose report format.

* doc/bison.texinfo (Understanding): Adjust to match the
current format.
doc: minor fixes to "Understanding" section

* doc/bison.texinfo (Understanding): Minor wording fixes and
improvements.  Fixes problems reported in
<https://savannah.gnu.org/patch/?4306>.
(cherry picked from commit 35880c82dc7a774fc2eefc956c3db97b65082607)
doc: style changes.

* doc/bison.texinfo: Avoid line width issues with TeX.
Upgrade ancient messages.
Move some comments to better looking places.
Add more @group.
(Mfcalc Symbol Table): Reduce variable scopes.
Prefer size_t for sizes.
Prefer declarations with an initial value.
Fix a @group environment.
(cherry picked from commit aaaa2aaef40eed197ebbd0bd45d8a66606cdb19c)

Conflicts:

	doc/bison.texinfo
doc: use only @example, not @smallexample.

* doc/bison.texinfo: Convert all @smallexamples into @examples.
Adjust layout where needed.
(cherry picked from commit c93f22fcf703f6e9613c3b1b5129879bc1e79618)

Conflicts:

	doc/bison.texinfo
doc: reformat grammar snippets.

* doc/bison.texinfo: Convert the grammar examples to
use a narrower style.  This helps fitting into the
@smallbook constraints.
http://lists.gnu.org/archive/html/bison-patches/2012-03/msg00011.html
(cherry picked from commit 5e9b6624d78e7390a05e2c6b0708cc4944fb1861)

Conflicts:

	doc/bison.texinfo
doc: save width.

* doc/bison.texinfo (Language and Grammar): Use the same
layout for an example in all the versions, i.e., keep
as general case what used to be used only for Info.
(cherry picked from commit 1d280c0999ada8fc3fb0a96d01530948642f4444)
doc: stmt, not stmnt.

* doc/bison.texinfo: s/stmnt/stmt/g.  This is a
much more common abbreviation for "statement".
(cherry picked from commit 0860e38311eb80b0cba0b026d1fe7a8c81ffeec6)
doc: spell check.

* doc/bison.texinfo: here.
(cherry picked from commit 5a321748e2ec62e10c615e1e557c972c291b10db)

Conflicts:

	doc/bison.texinfo
doc: update the --verbose report format.

* doc/bison.texinfo (Understanding): Adjust to match the
current format.
(cherry picked from commit 29e20e22e0ecd5bf4c31c4ff32599ea5f404d136)
doc: spell fix.

* doc/bison.texinfo: here.
Reported by Tim Landscheidt.
Merge remote-tracking branch 'fsf/maint'

* fsf/maint: (404 commits)
  doc: update the --verbose report format.
  doc: spell check.
  doc: stmt, not stmnt.
  doc: save width.
  doc: reformat grammar snippets.
  doc: use only @example, not @smallexample.
  doc: style changes.
  doc: minor fixes to "Understanding" section
  tests: minor fixes/simplifications
  tests: be robust to quote style.
  maint: update gnulib.
  tests: be robust to POSIXLY_CORRECT being defined.
  doc: fix environment issues.
  regen.
  tests: fix regressions.
  glr: fix ambiguity reports.
  doc: stylistic improvements.
  maint: address sc_prohibit_doubled_word.
  maint: address sc_prohibit_always-defined_macros.
  maint: address sc_bindtextdomain, sc_program_name and sc_prohibit_HAVE_MBRTOWC.
  ...