execute tests that require srcdir environment variable with cmake

- uncomment procedures for aeadtest, evptest, pq_test, ssltest, testdsa and testrsa
- add set_tests_properties() for setting environment variable srcdir
- tweak openssl path in ssltest.sh, testdsa.sh, testenc.sh and testrsa.sh

tests/testdsa.sh

@@ -4,9 +4,16 @@
 
 #Test DSA certificate generation of openssl
 
-cmd=../apps/openssl/openssl
-if [ -e ../apps/openssl/openssl.exe ]; then
-	cmd=../apps/openssl/openssl.exe
+if [ -d ../apps/openssl ]; then
+	cmd=../apps/openssl/openssl
+	if [ -e ../apps/openssl/openssl.exe ]; then
+		cmd=../apps/openssl/openssl.exe
+	fi
+else
+	cmd=../apps/openssl
+	if [ -e ../apps/openssl.exe ]; then
+		cmd=../apps/openssl.exe
+	fi
 fi
 
 if [ -z $srcdir ]; then