Refactor the process of choosing validators.

site_scons/site_tools/library_deps.py

Index: site_scons/site_tools/library_deps.py
diff --git a/site_scons/site_tools/library_deps.py b/site_scons/site_tools/library_deps.py
index 10894dab2d6763336f89d0be31bbd0be6ba8ce43..5cf7e38c3ab8bc3dfd60fa0add5b263f5c1814b4 100644
--- a/site_scons/site_tools/library_deps.py
+++ b/site_scons/site_tools/library_deps.py
@@ -28,6 +28,7 @@ LIBRARY_DEPENDENCIES_DEFAULT = {
         'platform',
         'platform_qual_lib',
         'gio',
+        'validators',
         ],
     }
 
@@ -87,7 +88,7 @@ PLATFORM_LIBRARY_DEPENDENCIES = {
             # or decoder, add the following:
             #'nc_opcode_modeling_verbose_x86_32',
             ],
-        'sel': [
+        'validators': [
             'ncvalidate_x86_32',
             'dfa_validate_caller_x86_32',
             'dfa_validate_x86_32',
@@ -143,7 +144,7 @@ PLATFORM_LIBRARY_DEPENDENCIES = {
             'ncdis_seg_sfi_x86_64',
             'ncval_base_x86_64',
             ],
-        'sel': [
+        'validators': [
             'ncvalidate_x86_64',
             'dfa_validate_caller_x86_64',
             'dfa_validate_x86_64',
@@ -153,7 +154,7 @@ PLATFORM_LIBRARY_DEPENDENCIES = {
         'ncvalidate_arm_v2': [
             'arm_validator_core',
             ],
-        'sel': [
+        'validators': [
             'ncvalidate_arm_v2',
             ],
         },