Objective-C/C++: Ensure sufficient setup for the preprocessor.
The tokenizer makes use of functions that determine if identifiers
are interface or class names, and those functions need a hash map
to be set up.
This ensures that these are initialized before pre-process-only
jobs are run.
gcc/objc/ChangeLog:
* objc-act.c (objc_init): Initialize interface and class
name hash maps before the preprocessor uses them.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
(cherry picked from commit
60f58d0630805e8dce79f5489658fd83e42fa8f1)