Add SHARED_LIB_SUFFIX to generator_default_variables again. SHARED_LIB_SUFFIX was deleted in r941 but WriteAndroidNdkModuleRule is still using it.
Add SHARED_LIB_SUFFIX to generator_default_variables again.
SHARED_LIB_SUFFIX was deleted in r941 but WriteAndroidNdkModuleRule
is still using it.

Review URL: http://codereview.chromium.org/7779042/
Patch from Yohei Yukawa <yukawa@google.com>



csulmone/gyp,csulmone/gyp,csulmone/gyp,csulmone/gyp