dropbear: update to 2013.59 (released 4 october 2013)

- drop mirror www.mirrors.wiretapped.net (not working anymore)
- drop patch 300-ipv6_addr_port_split.patch, included upstream
- refresh patches
- various upstream changes: http://matt.ucc.asn.au/dropbear/CHANGES

Signed-off-by: Catalin Patulea <cat@vv.carleton.ca>

SVN-Revision: 38356

package/network/services/dropbear/patches/500-set-default-path.patch

@@ -1,6 +1,6 @@
 --- a/options.h
 +++ b/options.h
-@@ -297,7 +297,7 @@ be overridden at runtime with -I. 0 disa
+@@ -301,7 +301,7 @@ be overridden at runtime with -I. 0 disa
  #define DEFAULT_IDLE_TIMEOUT 0
  
  /* The default path. This will often get replaced by the shell */