go through the current SyncIO API and find out which functions are used in the PHASTA 'master' branch

The following functions are defined in phastaIO.h

```
  mem_alloc
  queryphmpiio
  initphmpiio
  initphmpiiosub
  finalizephmpiio
  SwapArrayByteOrder
  openfile
  closefile
  readHeader
  writeHeader
  readdatablock
  writeDataBlock
  writestring
  togglestrictmode
  isLittleEndian
  computeColor
```