--Upd doxygen version_number to github link, for easier comparaison --Fix convert_sql calling case, now doesn't care from where perl script is called.
Fix small newline typo. Add option argument in script. Prevent rebuilding by default if git is unchanged. see build_doc --help for available option
Adding doxyconf as rA default conf for doxygen and for people if they wish to build their doc. Adding tools/build_doc to check app for building doc and to update version number in documentation. Fix few typo in src