Spirit: more pizza version customization

[SVN r63718]
Spirit: Fixing merge problem 

[SVN r63721]
Examples bug fixes and code tweaks to make g++ 4.2 happy.

[SVN r63729]
Scheme compiler fixes for g++ 4.2

[SVN r63730]
Spirit: Fixing Qi example for ggc

[SVN r63755]
Spirit: integrated lexer with Qi's debug facilities

[SVN r63756]
Spirit: Fixing regression in Karma caused by a semantic change in proto

[SVN r63787]
Spirit: minor documentation work, untabified file

[SVN r63788]
Spirit: merging from trunk

[SVN r63798]
Spirit: added karma::duplicate[] directive

[SVN r63891]
Spirit: added karma::duplicate[] directive, tests and docs

[SVN r63892]
Spirit: updating generated docs

[SVN r63893]
Spirit: Adding workaround to enable more tests to compile with gcc 3.4.x 

[SVN r63908]
Spirit: Updating scheme example on release branch

[SVN r63923]
Spirit: extended fix for gcc 3.x to intel compilers on apple

[SVN r63924]
Spirit: improving compatibility with VC7.1

[SVN r63942]
Spirit: merging from trunk

[SVN r63993]
Rebuild spirit documentation for phoenix + repository.

[SVN r64168]
Merge documentation changes.


[SVN r64186]
Spirit: fixed debug output for variants

[SVN r64229]