Log message:
As proposed in following mail:
  http://mail-index.netbsd.org/pkgsrc-users/2013/11/16/msg018897.html

(1) Import nios2-binutils 2.23 (CodeSourcery derived) from wip.
(2) nios2-gcc41 now does not include nios2/Makefile.common,
    and unnecessary buildlink3 line to kpathsea removed.
(3) Switch nios2/Makefile.common to provide above (1) package.
(4) Import nios2-gcc 4.7.3 (CodeSourcery derived) from wip,
   including file (3) nios2/Makefile.common and DEPENDS (1) binutils.
(5) Switch all gcc's, nios2-gcc{3,41} to DEPENDS above (1) binutils.
(6) Delete nios2-binutils220 (2.20).

Log message:
As proposed at pkgsrc-users@,
  (1) nios2-gcc       3.4.6 renamed to nios2-gcc3
  (2) nios2-binutils  2.20  renamed to nios2-bintuils220
  (3) nios2-gcc41     4.1.2 is imported from wip
  nios2/Makefile.common, used be for (1) and (2) are
  now for (2) and (3).

Log message:
The following combination of GNU/Altera nios2 tool-chain is newly added.
nios2          (just a Makefile.common)
nios2-binutils (2.20)
  Cross binutils for ALTERA FPGA Nios2 processor.
nios2-gcc
  Cross gcc-3.4.6 for ALTERA FPGA Nios2 processor.