Committed script to fork boost-lib repositories to boostorg at GitHub
Adjust URLs in scripts

Github repos moved from the boost-lib organization to the boostorg organization.
Merge branch 'develop' of https://github.com/prograholic/ryppl into develop
Fixed installation of missed dependencies
Added script for copying repos from bitbucket to github
Created new CMake module: RypplXsltproc

Also added support for non required xsltproc
If xsltproc is not found then documentation
will not be built
Updated function export_documentation, so it can perform common doc operations

Also added new file: RypplXsltTransformations which have xslt transforms
Added DEPENDS support
Fixed autoindex issue

Now autoindex applies only to docbook XMLs
Added generator for single-html document
Added new function for building documentation fot geometry library
Added initial support for HTML only documentation
Fixed building full doc
Added docutils cmake wrapper
Added parameters and depends support
Added initial support for PDF generation
Removed version checking (xep awaits input after version query)
Fixed incorrect pdf target when no pdf generators available
Also use flags common to all build types when generating precompiled headers