bug fix for macosx, in make.macosx64.sh set the stack size to 2M, make the...

bug fix for macosx, in make.macosx64.sh set the stack size to 2M, make the heap size the same as for 64 bit linux (60M instead of 48M), compile module backendconvert with -fusion

unix/make.macosx64.sh

@@ -5,6 +5,8 @@ CLM=clm
 
 (cd backendC/CleanCompilerSources; make -f Makefile.linux64)
 (cd main/Unix; make -f Makefile all);
-$CLM -gcm -h 48M -nt -nw -ci -nr -IL ArgEnv -I backend -I frontend -I main -I main/Unix \
+$CLM -ci -I backend -I frontend -I main -I main/Unix -ABC -fusion backendconvert
+$CLM -gcm -h 60M -s 2M -nt -nw -ci -nr -I backend -I frontend -I main -I main/Unix \
+	-IL ArgEnv \
 	-l backendC/CleanCompilerSources/backend.a \
 	cocl -o cocl