o Added option to print memory usage on entry to profiling functions.
  To enable, set in GPTL build:
  - HAVE_BACKTRACE=yes in macros.make
  Then in application:
  - ret = GPTLsetoption (GPTLdopr_memusage, 1)
  - compile with -finstrument-functions -g -rdynamic
o Removed obsolete macros.make.sicortex