add glibc support to examples

BUG=


Review URL: https://chromiumcodereview.appspot.com/10824246

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151300 0039d316-1c4b-4281-b951-d872f2087c98

native_client_sdk/src/examples/fullscreen_tumbler/example.dsc

 {
-  'TOOLS': ['newlib', 'pnacl'],
+  'TOOLS': ['newlib', 'glibc', 'pnacl'],
   'TARGETS': [
     {
       'NAME': 'fullscreen_tumbler',

native_client_sdk/src/examples/hello_world_gles/example.dsc

 {
-  'TOOLS': ['newlib', 'pnacl', 'win'],
+  'TOOLS': ['newlib', 'glibc', 'pnacl', 'win'],
   'TARGETS': [
     {
       'NAME' : 'hello_world_gles',

native_client_sdk/src/examples/tumbler/example.dsc

 {
-  'TOOLS': ['newlib'],
+  'TOOLS': ['newlib', 'glibc', 'pnacl'],
   'TARGETS': [
     {
       'NAME' : 'tumbler',