Move to asciidoc

The core library documentation has been converted to use asciidoc. It
provides better flexibility in creating documentation such as tables
and more powerful formatting rules.

The doxygen based API reference remains and three scripts have been
added to:
 - gen-tags.sh: extract tag information from doxygen reference
 - tags2dict.sh: generate a name=link dictionary file
 - doxygen-link.py: replace all references in the asciidoc documentation
                    refering to API functions, struct, etc. with a link
		    into the doxygen API reference.

'make gendoc' continue to generate all documentation.

The following tools are required to generate documentation:
 - asciidoc
 - mscgen
 - asciidoc mscgen plugin
 - pygments
 - xmlstarlet

1 files changed, 0 insertions, 0 deletions

diff --git a/doc/images/icons/home.png b/doc/images/icons/home.png
new file mode 100644
index 0000000..37a5231
--- /dev/null
+++ b/doc/images/icons/home.png