[patch, fortran, committed] Handle EXEC_WAIT in Fortran tree dump

[Thomas Koenig]

Hello world,

I noticed that EXEC_WAIT wasn't handled in the Fortran tree dump.
This patch does that.  While preparing this, I also noticed that
the values for the END and EOR tags were interchanged and fixed
this as well.

Committed as obvious and simple.

Just a cleanup for the time when WAIT actually does anything :-)

Regards

	Thomas

2017-10-03  Thomas Koenig  <tkoenig@gcc.gnu.org>

         * io.c (match_wait_element): Correctly match END and EOR tags.
         * dump-parse-tree.c (show_code_node): Handle EXEC_WAIT.
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