GNU Parallel Bug Reports --extensionreplace option broken in 20120422

[Brian Swift]

--extensionreplace --er options broken due to lack of '=s' in options_hash

Symptom:
$ ls * | parallel --extensionreplace '{foo}' "echo mkdir ./{foo}"
/bin/bash: {foo}: command not found
/bin/bash: {foo}: command not found

Patch:
--- parallel-201204222012-04-21 18:17:51.000000000 +0000

+++ parallel2012-04-24 06:39:46.579581214 +0000
@@ -419,7 +419,7 @@
  "null|0" => \$::opt_0,
  "quote|q" => \$::opt_q,
  "I=s" => \$::opt_I,
- "extensionreplace|er" => \$::opt_U,
+ "extensionreplace|er=s" => \$::opt_U,
  "U=s" => \$::opt_retired,
  "basenamereplace|bnr=s" => \$::opt_basenamereplace,
  "dirnamereplace|dnr=s" => \$::opt_dirnamereplace,