v2.9.13
Redo build system to properly use autotools and avoid compilation with apxs util.
Remove unwanted tests from configure.ac
Replace obsolote macros
Add lua51 form (legacy syntax)
Typo fix
Fix option check condition
build/find_xml.m4: Check for libxml2 via pkg-config then xml2-config
fix: yajl detection for source installations (#3457)