DF_1_INTIFIRST

[Ulrich Drepper]

I've implemented the DF_1_INTIFIRST flag now and it's being used in
the thread library (and only there, it's specially for this DSO).  The
test case Jakub sent works for me now.  On i686.

But there is more work left.  All architectures which have separate
initfini.c files need work.  There is a file named pt-initfini.c
required for architecture which has a special initfini.c file.  So,
get working (HPPA, IA64, SH, S390).

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