alpha--netbsd1.6.2:
1) Rename the baseline_symbols.txt files that define abi and implement
logic in Makefile that uses these according to architecture and
NetBSD version (1.x versus 2.x)
2) Add several patches that allow code to compile on alpha--netbsd1.6.2
3) Revise Makefile so that libiconv is found under NetBSD 1.6.2
