this makes it so that a flag is set if either an objective-c
compilation unit is found,
or the user goes 'set language objective-c' in the case where debug
symbols are absent.
2010-10-05 Matt Rice <ratmice@gmail.com>
* defs.h: Add comment.
* dwarf2read.c (set_cu_language): Notice that a language has been
seen.
* language.c (set_language): Ditto.
(mask_for_language, language_has_cu_loaded): New Functions.
(set_language_has_cu_loaded): Ditto.
* language.h: Declare new functions.
* linespec.c (decode_line_1): Don't lookup objective-c methods
unless objective-c has been seen.