use ArgEnv instead of ../libraries/ArgEnvUnix in make.linux_arm.sh

unix/make.linux_arm.sh

@@ -6,6 +6,6 @@ CLM=clm
 (cd main/Unix; make -f Makefile.arm all);
 $CLM -ci -I backend -I frontend -I main -I main/Unix -ABC -fusion backendconvert
 $CLM -h 32M -nt -nw -ci -nr -I backend -I frontend -I main -I main/Unix \
-	-I ../libraries/ArgEnvUnix \
+	-IL ArgEnv \
 	-l backendC/CleanCompilerSources/backend.a \
 	cocl -o cocl