Exception configuration no longer in luaconf.h (5.2.1)

[Vinnie Falco <vinnie.falco@...>]

4.6 reads "You can also choose to use exceptions if you use C++; see
file luaconf.h"
(http://www.lua.org/manual/5.2/manual.html#4.6)

However the preprocessor directives for __cplusplus compilation are in
ldo.c, having been moved from luaconf.h from 5.1.5. A change that I
can't say I am completely happy about.

Was there a design objection to making LUAI_THROW, LUAI_TRY, and
luai_jmpbuf public?

Thanks

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