Use unique name for getcwd C implementation.
Use unique name for getcwd C implementation.

getcwd is also implemented as an extension so avoid name clash with the
getcwd intrinsic implemented as an extension in several compilers.

hande-qmc/hande,ruthfranklin/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande