Removed contents
Split manual docbook source files in several parts.
makefile to be used with xsltproc on windows
Parameters to be used with xsltproc
css for the manual in html format.
Split manual docbook source file in several smaller parts.
Added Refactoring TODO-s
Removed tabs.
Bump to 4.99.23
Added test for RB_MINGW symbol to make it compile with makefile.mingw