This commit was manufactured by cvs2svn to create branch 'RC_1_33_0'.

[SVN r30300]
first try at fixing is_incrementable for gcc 4.0.2


[SVN r31243]
second try at gcc 4.0.2


[SVN r31249]
reverted recent changes


[SVN r31255]
merged from trunk


[SVN r31296]
This commit was manufactured by cvs2svn to create branch 'RC_1_33_0'.

[SVN r31393]