mariadb-devel /usr/include/mysql/my_config_x86_64.h error <my_config.h> MUST be included first!

Issue

• mariadb-5.5.40-1.el7_0 introduced a strict check in /usr/include/mysql/my_config.h that breaks build of MySQL-python (aka MySQLdb)

• Within python virtual environment, pip install MySql-python fails with

  $ bin/pip install MySql-python
  <snip>
      In file included from /usr/include/mysql/my_config.h:14:0,
                       from _mysql.c:44:
      /usr/include/mysql/my_config_x86_64.h:654:2: error: #error <my_config.h> MUST be included first!
       #error <my_config.h> MUST be included first!
        ^
      error: command 'gcc' failed with exit status 1
  <snip>