Finish the refactor work of bccPrepareExecutable.

Rename bccPrepareExecutableEx to bccPrepareExecutable.
Currently, bccPrepareExecutableEx is only an alias of
bccPrepareExecutable, and we will remove bccPrepareExecutableEx
several commits later.

Change-Id: Ia0bb0c54f219690b2cb74e7cf488079711819ed1
1 file changed