[PATCH v2 0/7] Macros for Asciidoctor support

There are two major processors of AsciiDoc: AsciiDoc itself, and Asciidoctor. Both have advantages and disadvantages, but traditionally the documentation has been built with AsciiDoc, leading to some surprising breakage when building with Asciidoctor. Partially, this is due to the need to specify a significant number of macros on the command line when building with Asciidoctor.

This series cleans up some issues building the documentation with Asciidoctor and provides two knobs, USE_ASCIIDOCTOR, which controls building with Asciidoctor, and ASCIIDOCTOR_EXTENSIONS_LAB, which controls the location of the Asciidoctor Extensions Lab, which is necessary to expand the linkgit macro.

The need for the extensions could be replaced with a small amount of Ruby code, if that's considered desirable. Previous opinions on doing so were negative, however.

In the process, I found several issues with cat-texi.perl, which have been fixed. It has also been modernized to use strict, warnings, and lexical file handles. I also made an attempt to produce more diffable texi files; I may follow up with additional series along this line to make the documentation build reproducibly.

Changes from v1:
* Fix a brown-paper-bag bug.

brian m. carlson (7):
  Documentation: fix warning in cat-texi.perl
  Documentation: modernize cat-texi.perl
  Documentation: remove unneeded argument in cat-texi.perl
  Documentation: sort sources for gitman.texi
  Documentation: add XSLT to fix DocBook for Texinfo
  Documentation: move dblatex arguments into variable
  Makefile: add a knob to enable the use of Asciidoctor

 Documentation/Makefile      | 22 ++++++++++++++++++----
 Documentation/cat-texi.perl | 21 ++++++++++++---------
 Documentation/texi.xsl      | 26 ++++++++++++++++++++++++++
 Makefile                    |  6 ++++++
 4 files changed, 62 insertions(+), 13 deletions(-)
 create mode 100644 Documentation/texi.xsl