Fix detection of 'mysql.h' by autotools
Fix detection of 'mysql.h' by autotools

BelledonneCommunications/flexisip,gale320/flexisip,biddyweb/flexisip,gale320/flexisip,gale320/flexisip,biddyweb/flexisip,gale320/flexisip,biddyweb/flexisip,BelledonneCommunications/flexisip,BelledonneCommunications/flexisip,BelledonneCommunications/flexisip,biddyweb/flexisip