nodejs: add missing patch for uClibc-ng compile

package/nodejs/patches/patch-src_backtrace_posix_cc

@@ -0,0 +1,11 @@
+--- node-v6.3.0.orig/src/backtrace_posix.cc	2016-07-06 19:14:10.000000000 +0200
++++ node-v6.3.0/src/backtrace_posix.cc	2016-07-15 23:43:16.236096049 +0200
+@@ -4,7 +4,7 @@
+ #include <features.h>
+ #endif
+ 
+-#if defined(__linux__) && !defined(__GLIBC__) || defined(_AIX)
++#if defined(__linux__) && !defined(__GLIBC__) || defined(_AIX) || defined(__UCLIBC__)
+ #define HAVE_EXECINFO_H 0
+ #else
+ #define HAVE_EXECINFO_H 1