generate rst instead of html for reference documentation. This allows for RST markup in comments

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@8677 a83610d8-ad2a-0410-a6ab-fc0612d85776
fix parse error in xml parser

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@8678 a83610d8-ad2a-0410-a6ab-fc0612d85776
move documentation from manual.rst to headers

git-svn-id: https://svn.code.sf.net/p/libtorrent/code/trunk@8680 a83610d8-ad2a-0410-a6ab-fc0612d85776