Enabling new Singleton Private Data behavior (for IAR etc).
CPL-Preproc tests remain to be fixed.
New complete Singleton PRIVATE strategy (for IAR) with tests fix.
.g file cleanup
Removing stdio include, related to the "extern" keyword handling.
Removing debug trace
Fixing line separator handling (IAR being sensitive to CRLF)
Merge pull request #5 from StephaneSeyvoz/singleton-private-data

Integrating "Singleton private data" bug fix