rather than find. This behaves better if ${ALT_GCC} does not specify
a gcc executable.
2) Change to uniform handling of ABI baseline-pairs for NetBSD. There
must be agreement between the Makefile and libstdc++-v3/configure.host;
this change ensures consistency by introducing ABI_BASELINE_PAIR
variable used in both.
3) Bump revision number.
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
