dw2gencfi rewrite

[Andreas Jaeger]

On i686-linux-gnu I now have these new failures:
Running /cvs/binutils-ln/ld/testsuite/ld-elfweak/elfweak.exp ...
FAIL: ELF weak func first DSO
FAIL: ELF weak func last DSO
FAIL: ELF weak data first DSO
FAIL: ELF weak data last DSO
FAIL: ELF weak data first DSO common
FAIL: ELF weak data last DSO common

Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
    http://www.suse.de/~aj