s/restrict/_restrict/
Silence warnings

static declaration of 'select_column' follows non-static declaration
Silence warnings

static declaration of 'select_essential' follows non-static declaration
Silence warnings

static declaration of 'verify_cover' follows non-static declaration
Silence warnings

static declaration of 'visit_row/col' follows non-static declaration
Silence warnings

conflicting types for 'aux_etr_order'
Get rid of 'st' directory
Get rid of 'mm' directory
Get rid of 'uprintf' directory
Get rid of 'errtrap' directory
Add BOOM 20/50 PLA benchmarks
Add some known answers
Add test script
Add test target to Makefile
Cleanup espresso.h
Use system stdlib
Add return type to cvrin.PLA_labels
Add return type to cvrout.kiss_output
Add return type to cvrout.kiss_print_cube
Add return type to equiv.find_equiv_outputs