[libstdc++ 1/2] Add testsuite comments, shuffle a bit of code.

[Paolo Carlini]

Hi Phil,

while you are working on the collate tests and, more generally
the testsuite... I wonder which is your take on this (serious,
IMHO) issue:

    http://gcc.gnu.org/ml/libstdc++/2004-02/msg00100.html

???

Thanks,
Paolo.