remove crude_grep in favor of a simple =~ substring match.

The crude_grep function served only to perform a simple substring check
against the output of openssl -help. So, instead of running the command
each time, iterating its output line by line, and checking for the
substring within it, this simply caches the -help output at startup and
uses $help =~ substring to produce the same result in a single pass.

cipherscan

@@ -19,6 +19,7 @@ if [[ "$(uname -s)" == "Darwin" ]]; then
 else
     OPENSSLBIN="${REALPATH}/openssl"
 fi
+OPENSSLBINHELP="$($OPENSSLBIN s_client -help 2>&1)"
 
 # cipherscan requires bash4, which doesn't come by default in OSX
 if [[ ${BASH_VERSINFO[0]} -lt 4 ]]; then
@@ -295,18 +296,8 @@ c_hash() {
     done
 }
 
-crude_grep() {
-    while read line; do
-        if [[ $line =~ $1 ]]; then
-            return 0
-        fi
-    done
-    return 1
-}
-
 check_option_support() {
-    $OPENSSLBIN s_client -help 2>&1 | crude_grep "$1"
-    return $?
+    [[ $OPENSSLBINHELP =~ "$1" ]]
 }
 
 parse_openssl_output() {