* testsuite/icf_safe_so_test.sh: Add #!/bin/sh to start.

	* testsuite/icf_safe_so_test.sh: Add #!/bin/sh to start.
	Change == to -eq.
	* testsuite/icf_string_merge_test.sh: Add #!/bin/sh to start.
	* testsuite/icf_safe_test.sh: Add #!/bin/sh to start.
	Change == to -eq.
	* testsuite/icf_sht_rel_addend_test.sh: Add #!/bin/sh to start.
	* testsuite/icf_preemptible_functions_test.sh: Add #!/bin/sh to start.