Put -lgcc and -lgcc_eh inside --{start,end}-group for pnacl newlib gcc
Put -lgcc and -lgcc_eh inside --{start,end}-group for pnacl newlib gcc

In the native NaCl newlib toolchain, -lgcc -lgcc_eh go inside the
--start-group...--end-group block with -lc.  Be consistent.

BUG=none
TEST=verified locally

R=pdox@google.com,jvoung@google.com

Review URL: http://codereview.chromium.org/6962030

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@5485 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client