* cp-tree.h: Don't include gansidecl.h.
* exception.cc: Include gansidecl.h (since we don't include config.h)
* g++spec.c: Don't include gansidecl.h.
From-SVN: r23557
* class.c (get_enclosing_class): New function.
(is_base_of_enclosing_class): Likewise.
* cp-tree.h (get_enclosing_class): Declare.
(is_base_of_enclosing_class): Likewise.
* pt.c (coerce_template_parms): Use them.
* g++spec.c (lang_specific_driver): Check whether MATH_LIBRARY is
null to decide whether to use it.
From-SVN: r22343
* g++spec.c (NEED_MATH_LIBRARY): Define to 1 if not already defined.
(lang_specific_driver): Initialize need_math with NEED_MATH_LIBRARY.
(lang_specific_driver): Only add -lm automatically if need_math is
nonzero.
From-SVN: r20765
* g++spec.c (lang_specific_driver): New argument in_added_libraries.
New local added_libraries. Increment count when add library to
arglist.
From-SVN: r19279
* g++spec.c (lang_specific_driver): Put missing hyphen in front of
arguments we compare against. Start the count of I at 1, not 0,
since argv[0] is still the command.
From-SVN: r13338
