Remove initialization of padding of reals, ireals and creals. According to the spec and C ABIs, the contents of padding is undefined. This was breaking dstress creal_01,02,03,07,08,09 and 20 on x86-64. The code was apparently added to fix creal_13,14 and 15, which explicitly compare padding and assert if it's different. I'd argue those tests are broken. (Also, on x86-64 they *also* fail) The tests this fixes, on the other hand, are basic arithmetic.

We have two different test sets. For the test drivers
you need do compile the .d files in this folder with
a Phobos D compiler.

To run the 'mini' test suite run
./runminitests

To run the DStress based tests execute
./runtest tmp-sensible-name
and then use 
./findregressions old-results new-results 
to display a list of regressions. You can
download old result files from
http://www.incasoftware.de/~kamm/ldc/reference