WARNING! dependency on: lace_cfgreader (branchpoint), lace_utils

WARNING! dependency on: lace_cfgreader (branchpoint), lace_utils

* new gnokiirc/global settings:
  * connect_script/disconnect_script - needed for BIP but can be general
    * entries in such sections passed as %ENV - ...
    * provided chat script ("connect-et" now) w/o bugs of "ppp-6210-modem"
  * serial_baudrate               - used when not overriden by phone
  * handshake = software/hardware - used when not overriden by phone
  * require_dcd - kills Gnokii when modem drops connection - needed for BIP
  * serial_write_usleep - waits between each character sent - for Siemens M20
* All open device fds are now closed and DTR/RTS-cleared on exit
  * SIGINT abort not properly handled - clashing with pthreads
* Fixed hang-ons by fcntl(FASYNC) forgotting to specify also FNONBLOCK