eglibc/2.16: add missing dl-search-paths patch

Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 34290

toolchain/eglibc/patches/2.16/200-add-dl-search-paths.patch

+add /usr/lib to default search path for the dynamic linker
+
+--- a/libc/Makeconfig
++++ b/libc/Makeconfig
+@@ -539,6 +539,9 @@
+ default-rpath = $(libdir)
+ endif
+ 
++# Add /usr/lib to default search path for the dynamic linker
++user-defined-trusted-dirs := /usr/lib
++
+ ifndef link-extra-libs
+ link-extra-libs = $(LDLIBS-$(@F))
+ link-extra-libs-static = $(link-extra-libs)