Check for the executable $openssl, not just the file.
Part of PR: 75

tools/c_rehash.in

diff --git a/tools/c_rehash.in b/tools/c_rehash.in
index 69da98f..5b05340 100644
--- a/tools/c_rehash.in
+++ b/tools/c_rehash.in
@@ -17,10 +17,10 @@
 
 $ENV{PATH} .= ":$dir/bin";
 
-if(! -f $openssl) {
+if(! -x $openssl) {
 	my $found = 0;
 	foreach (split /:/, $ENV{PATH}) {
-		if(-f "$_/$openssl") {
+		if(-x "$_/$openssl") {
 			$found = 1;
 			last;
 		}