rebased branch avrdude_config for upstream PR
added documentation for menuconfig
fixed logical error in doc
fixed off-by-one error
ECMD "ee rm" depends on VFS_EEPROM_SUPPORT
Merge pull request #251 from michaelb42/e6_avrdude_config

Support avrdude and fuses configuration via menuconfig. Add 'program' and 'fuses' makefile targets.
merged and resolved upstream commits