master updated (1d21ccf750 -> 1b0c079783)

[Patrice Dumas]

pertusus pushed a change to branch master.

    from 1d21ccf750 * INSTALL: elaborate on PERL_EXT_* variables for building 
XS modules, why they are needed and how to override them when running make.
     new 66595c6bf6 * tp/maintain/setup_converters_code_tables.pl: set 
ENV{'TEXINFO_XS'} = 'omit' to avoid depending on XS code being loaded.
     new 1b0c079783 * tp/Texinfo/Convert/HTML.pm (_convert_special_unit_type): 
rename element as output_unit.


Summary of changes:
 ChangeLog                                       |  52 +++++-
 tp/Texinfo/Convert/HTML.pm                      |  23 +--
 tp/Texinfo/XS/convert/ConvertXS.xs              |   2 +-
 tp/Texinfo/XS/convert/build_html_perl_state.h   |   1 +
 tp/Texinfo/XS/convert/call_html_perl_function.c | 133 ++++++++++++++
 tp/Texinfo/XS/convert/call_html_perl_function.h |   9 +
 tp/Texinfo/XS/convert/convert_html.c            | 225 ++++++++++++++++++++++--
 tp/Texinfo/XS/convert/get_html_perl_info.c      |  44 ++++-
 tp/Texinfo/XS/convert/get_html_perl_info.h      |   6 +-
 tp/Texinfo/XS/main/converter_types.h            |  87 ++++++++-
 tp/Texinfo/XS/main/document_types.h             |   8 +-
 tp/Texinfo/options_data.txt                     |  16 +-
 tp/maintain/regenerate_C_options_info.pl        |  35 +++-
 tp/maintain/setup_converters_code_tables.pl     |   8 +-
 14 files changed, 601 insertions(+), 48 deletions(-)