Add correction message to bad linkage error.

Add correction message to bad linkage error.

Adds message to use "-allow-externally-defined-symbols" on bad
linkage errors.

Also cleans up code by defining common reporting routine.

BUG=None
R=stichnot@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=a313a121cc46b81bca7472e43ed0ae72156e8974

[Karl, 2015-10-08 17:30:37]

kschimpf@google.com changed reviewers:
+ stichnot@chromium.org

[Jim Stichnoth, 2015-10-08 17:36:11]

Thanks!  LGTM

https://chromiumcodereview.appspot.com/1392273002/diff/20001/src/PNaClTransla...
File src/PNaClTranslator.cpp (right):

https://chromiumcodereview.appspot.com/1392273002/diff/20001/src/PNaClTransla...
src/PNaClTranslator.cpp:483: StrBuf << "\n  Use flag
-allow-externally-defined-symbols to allow";
maybe s/allow/override/ ?

[Karl, 2015-10-08 17:41:02]

Committed patchset #3 (id:40001) manually as
a313a121cc46b81bca7472e43ed0ae72156e8974 (presubmit successful).

[Karl, 2015-10-08 17:41:14]

https://codereview.chromium.org/1392273002/diff/20001/src/PNaClTranslator.cpp
File src/PNaClTranslator.cpp (right):

https://codereview.chromium.org/1392273002/diff/20001/src/PNaClTranslator.cpp...
src/PNaClTranslator.cpp:483: StrBuf << "\n  Use flag
-allow-externally-defined-symbols to allow";
On 2015/10/08 17:36:11, stichnot wrote:
> maybe s/allow/override/ ?

Done.