* gnu/packages/documentation.scm (scrollkeeper): New variable.
* gnu/packages/documentation.scm (doc++): New variable. * gnu/packages/patches/doc++-include-directives.patch, gnu/packages/patches/doc++-segfault-fix.patch: New files. * gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/asciidoc.scm (asciidoc): Move this... * gnu/packages/doxygen.scm (doxygen): ...and this... * gnu/packages/documentation.scm: ...to here. New file. * gnu-system.am (GNU_SYSTEM_MODULES): Add accordingly.