include guard

- instead of the library including y_va and y_inline, let them do it instead
- using #error directive to show if they've included this library before y_inline and y_va.

Author: PatrickGTR

mysql_prepared.inc

@@ -1,6 +1,6 @@
 
 #if !defined _INC_y_va
-    #error You need to include <YSI_Coding/y_va> before using this library.
+    #error You need to "#include <YSI_Coding/y_va>" before using this library.
 #endif
 
 #if defined MYSQL_PREPARED_INC
@@ -652,5 +652,5 @@ stock bool:MySQL_ExecuteParallel(Statement:statement, const callback[] = "", con
         return stmt_execute_inline(statement, TYPE_PARALLEL, callback);
     }
 #else
-    #error You need to include <YSI_Coding/y_va> before using this library.
+    #error You need to "#include <YSI_Coding/y_inline>" before using this library.
 #endif

test.pwn

@@ -1,10 +1,11 @@
 // generated by "sampctl package generate"
 
 #include <a_mysql>
-#include <YSI_Coding\y_inline>
+
 #include <YSI_Coding\y_va>
-#include "mysql_prepared"
+#include <YSI_Coding\y_inline>
 
+#include "mysql_prepared"
 
 new MySQL:MySQLHandle;