aria2: Patch away -lsupc++

Specifying -lsupc++ doesn't work for arm with -mthumb.

packages/aria2/configure.patch

@@ -0,0 +1,11 @@
+diff -u -r ../aria2-1.31.0/configure ./configure
+--- ../aria2-1.31.0/configure	2017-01-16 14:36:12.000000000 +0100
++++ ./configure	2017-03-18 22:59:35.435911913 +0100
+@@ -26132,7 +26132,6 @@
+ case "$host" in
+   *android*)
+     android=yes
+-    LIBS="$LIBS -lstdc++ -lsupc++"
+     case "$host" in
+       arm-*)
+         android_arm=yes