Use "==0" instead of "!strcmp" etc

For the various string-compare routines (strcmp, strcasecmp, str.*cmp)
use "strcmp()==0" instead of "!strcmp()"

Reviewed-by: Tim Hudson <tjh@openssl.org>

test/ssltest.c

diff --git a/test/ssltest.c b/test/ssltest.c
index 35df0f7..39f1d80 100644
--- a/test/ssltest.c
+++ b/test/ssltest.c
@@ -1059,7 +1059,7 @@
     argv++;
 
     while (argc >= 1) {
-        if (!strcmp(*argv, "-F")) {
+        if (strcmp(*argv, "-F") == 0) {
 #ifdef OPENSSL_FIPS
             fips_mode = 1;
 #else