bug #42662 clang warnings under FreeBSD 10.x
* avrftdi.c: remove warnings
* buspirate.c: (Dito.)
* dfu.c: (Dito.)
* fileio.c: (Dito.)
* libavrdude.h: (Dito.)
* pickit2.c: (Dito.)
* safemode.c: (Dito.)
* ser_avrdoper.c: (Dito.)
* ser_posix.c: (Dito.)
* ser_win32.c: (Dito.)
* stk500v2.c: (Dito.)
* usb_libusb.c: (Dito.)
* usbasp.c: (Dito.)

* config_gram.y: fix problem when using parent part with usbpid lists
                 (existing list was extended not overwritten)



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1328 81a1dc3b-b13d-400b-aceb-764788c761c2
ser_posix: added support for faster baudrates than 230400 on posix based systems
butterfly: implemented a variabel timeout for the erase call in the avr109 protocol. Needed to support AVRs with more than 128kB programm memory.