Create a branch for autoprefixing


[SVN r59996]
Initial work on autoprefixing

[SVN r59998]
Make scaling by x^0 a no-op

[SVN r60069]
Autoprefixed test added

[SVN r60148]
Autoprefixed more tests added

[SVN r60179]
Autoprefixed yet more tests added, and comments.

[SVN r60193]
added tests for scalars - not autoprefixed.

[SVN r60378]
Draft of autoprefixes.cpp examples.

[SVN r60382]
Added autoprefix and added more comments.  \detailed changed to \details to satisfy Doxygen.

[SVN r60431]
Typo in comment

[SVN r60433]
Added autoprefix and added more comments.  \detailed changed to \details to satisfy Doxygen.

[SVN r60435]
\detailed changed to \details to satisfy Doxygen.

[SVN r60448]
\detailed changed to \details to satisfy Doxygen.

[SVN r60449]
reverted kitchen sink.cpp link.

[SVN r60477]
Cut the number of template instantiations

[SVN r60521]
Fix tests for gcc

[SVN r60522]
Added thing_base_unit and euro_base_unit examples.

[SVN r60612]
Doxygen file info updated.

[SVN r60653]
Doxygen file info updated.

[SVN r60654]
Revert spurious changes

[SVN r60676]