Adding MariaDB 5.5 server to Travis tests.

Skipping one tests with 5.5 servers(and MySQL <5.7), since it doesn't make sense there.

.travis.yml

@@ -19,7 +19,7 @@ env:
   #- DB=mysql:5.5
   #- DB=mysql:5.6
   #- DB=mysql:5.7
-  #- DB=mariadb:5.5
+  - DB=mariadb:5.5
   - DB=mariadb:10.0
   - DB=mariadb:10.1
   - DB=mariadb:10.2

test/error.c

@@ -607,6 +607,10 @@ ODBC_TEST(t_odbc94)
   SQLINTEGER  error;
   SQLSMALLINT len;
 
+  if (ServerNotOlderThan(Connection, 5, 7, 0) == FALSE)
+  {
+    skip("The test doesn't make sense in pre-10.0 servers, as the target query won't cause in 5.5(or pre-MySQL-5.7 the error it tests");
+  }
   sprintf((char *)conn, "DRIVER=%s;SERVER=%s;UID=%s;PASSWORD=%s;DATABASE=%s%s;",
     my_drivername, my_servername, my_uid, my_pwd, my_schema, ma_strport);
 

test/result2.c

@@ -1056,7 +1056,7 @@ ODBC_TEST(t_odbc77)
   EXPECT_STMT(Stmt, SQLFetch(Stmt), SQL_NO_DATA);
   CHECK_STMT_RC(Stmt, SQLFreeStmt(Stmt, SQL_CLOSE));
 
-  if (ServerNewerThan(Connection, 10, 2, 5))
+  if (ServerNotOlderThan(Connection, 10, 2, 5))
   {
     OK_SIMPLE_STMT(Stmt, "ANALYZE SELECT 1");
     CHECK_STMT_RC(Stmt, SQLFetch(Stmt));

test/tap.h

@@ -1127,7 +1127,7 @@ char* hide_pwd(char *connstr)
 }
 
 
-BOOL ServerNewerThan(SQLHDBC Conn, unsigned int major, unsigned int minor, unsigned int patch)
+BOOL ServerNotOlderThan(SQLHDBC Conn, unsigned int major, unsigned int minor, unsigned int patch)
 {
   unsigned int ServerMajor= 0, ServerMinor= 0, ServerPatch= 0;
   SQLCHAR ServerVersion[32];