[Libguestfs] [PATCH v2 0/4] common/utils: Move libxml2 writer macros to a common header file.

[Richard W.M. Jones]

v1 was here:

https://www.redhat.com/archives/libguestfs/2018-October/msg00047.html

However it was broken in a few ways.  First of all the documentation
was broken because "/**" enhanced comments were not permitted on
macros.  This is fixed in the new 1/4 patch.

Secondly we didn't use single_element() everywhere possible, which
is fixed in the new 4/4 patch.

Lastly I've enhanced the documentation so it's clear what precise XML
is generated.

Rich.