-[/* _GL_INLINE is a portable alternative to ISO C99 plain 'inline'.
- _GL_EXTERN_INLINE is a portable alternative to 'extern inline'.
- _GL_INLINE_HEADER_BEGIN contains useful stuff to put
- in an include file, before uses of _GL_INLINE.
- It suppresses GCC's bogus "no previous prototype for 'FOO'" diagnostic,
- when FOO is an inline function in the header; see
- <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>.
- _GL_INLINE_HEADER_END contains useful stuff to put
- in the same include file, after uses of _GL_INLINE.