[RELEASE] Released version 1.3.14.12

[RELEASE] Released version 1.3.14.12

Released version 1.3.14.12 with the following main changes :
    - [BUG] Fix listen & more of 2 couples <ip>:<port>
    - [DOC] remove buggy comment for use_backend
    - [BUG] "option transparent" is for backend, not frontend !
    - [BUG] we must not exit if protocol binding only returns a warning
    - [BUG] inform the user when root is expected but not set
    - [BUG] the "source" keyword must first clear optional settings
    - [BUG] global.tune.maxaccept must be limited even in mono-process mode
    - [BUG] typo in timeout error reporting : report *res and not *err