[llvm-readobj] - Teach readobj to print DT_FILTER dynamic tag in human readable form.

Nothing special here, output format is similar to the format
used by binutils readelf and ELF Tool Chain readelf.

Differential revision: https://reviews.llvm.org/D35351

llvm-svn: 308033
diff --git a/llvm/test/Object/no-section-table.test b/llvm/test/Object/no-section-table.test
index bd60e68..9ecde4f 100644
--- a/llvm/test/Object/no-section-table.test
+++ b/llvm/test/Object/no-section-table.test
@@ -3,7 +3,7 @@
 
 CHECK: DynamicSection [ (24 entries)
 CHECK:   Tag                Type                 Name/Value
-CHECK:   0x0000000000000001 NEEDED               SharedLibrary (libc.so.6)
+CHECK:   0x0000000000000001 NEEDED               Shared library: [libc.so.6]
 CHECK:   0x000000000000000C INIT                 0x4B8
 CHECK:   0x000000000000000D FINI                 0x618
 CHECK:   0x0000000000000019 INIT_ARRAY           0x2006C0