Revert "Revert addition of CaDiCaL"

This reverts commit 5ecc7c3.

Author: mmicko

Makefile

@@ -28,7 +28,7 @@ MODULES := \
 	src/opt/cut src/opt/fxu src/opt/fxch src/opt/rwr src/opt/mfs src/opt/sim \
 	src/opt/ret src/opt/fret src/opt/res src/opt/lpk src/opt/nwk src/opt/rwt src/opt/rar \
 	src/opt/cgt src/opt/csw src/opt/dar src/opt/dau src/opt/dsc src/opt/sfm src/opt/sbd \
-	src/sat/bsat src/sat/xsat src/sat/satoko src/sat/csat src/sat/msat src/sat/psat src/sat/cnf src/sat/bmc src/sat/glucose src/sat/glucose2 src/sat/kissat \
+	src/sat/bsat src/sat/xsat src/sat/satoko src/sat/csat src/sat/msat src/sat/psat src/sat/cnf src/sat/bmc src/sat/glucose src/sat/glucose2 src/sat/kissat src/sat/cadical \
 	src/bool/bdc src/bool/deco src/bool/dec src/bool/kit src/bool/lucky \
 	src/bool/rsb src/bool/rpo \
 	src/proof/pdr src/proof/abs src/proof/live src/proof/ssc src/proof/int \

abclib.dsp

@@ -56155,6 +56155,9 @@ int Abc_CommandAbc9Test( Abc_Frame_t * pAbc, int argc, char ** argv )
         }
     }
 
+    extern void cadical_solver_test();
+    cadical_solver_test();
+    return 0;
     extern void kissat_solver_test();
     kissat_solver_test();
     return 0;