Modified old VPR4.3 at 2015-05-16,Friday

Due to origin VPR4.3' functions had a lot of parameters. I hated it
very much. So I modified some important functions in place.h/c for
readable.
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2014-05-16, Friday
Modified starting_temperature static to global public
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Modified vpr_types.h to support VPR5_Parallel
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New added run_low_temperature_place() function. I want to
change it for a long time.