Extend data collection in profiler and add user-interface profile function. * scripts/general/module.mk: Add profile.m. * scripts/general/profile.m: New file. * src/profiler.h (stats): New utility class. (data): Field to replace old times, can now hold more info. * src/profiler.cc (stats): Implementation of routines. (profile_data_accumulator): Changes necessary because call_stack was changed to be a std::vector now and for the new statistics map. (profile_data_accumulator::get_data): Extended to produce much more sophisticated output. (profile_data_accumulator::enter_function): Collect some more data than the timing.

--- a/scripts/general/module.mk
+++ b/scripts/general/module.mk
@@ -61,6 +61,7 @@
   general/polyarea.m \
   general/postpad.m \
   general/prepad.m \
+  general/profile.m \
   general/quadgk.m \
   general/quadl.m \
   general/quadv.m \