If you checked out the CAPA target  so it is parrallel to loncom
(i.e. /directory/CAPA and /directory/loncom exists) then to make
the capa.so module run the commands file.

> sh commands

Functions exported to perl:
int caparesponse_capa_check_answer(char *response,char *correct,
				   int type,int tol_type,double tolerance,
				   int sig_lbound,int sig_ubound, 
				   char *ans_fmt, char *unit_str,
				   int calc)