Auto build log with compile and link

Auto build log previsouly only available in build.
Fix compile-link test with OSX
Add tutorial skeleton to the docs
Update frontpage
Small update to docs and tutorial
Hide super-class implementations, update docs accordingly
Update comments in new private header files
Update tutorial: buffer instantiation
Tutorial update: queue and program
Update tutorial: set kernel args + run kernel + check results
Update tutorial: add remark for compiling on OSX
Finish tutorial
Remove unnecessary error check in canonical example
Remove 'v' from lib SOVERSION
Fix builds with MSVC
Fix builds with OCL <= 1.1 due to change in program wrapper
Fix warning on Linux 32-bit builds
Update VERSION file
Update front page with tutorial link
Added pkg-config support for cf4ocl.