[PATCH] build fixes

[David Zeuthen]

On Fri, 2007-02-09 at 11:42 -0500, William Jon McCann wrote:
> Hi,
> 
> I can't remember if I sent these already or not...
> 
> It seems that in order to detect libsmbios correctly the AC_CHECK_LIB
> needs to be wrapped with AC_LANG_PUSH([C++]) and AC_LANG_POP([C++]).
> 
> Also if --disable-gtk-doc is used then all the PKG_CHECK_MODULES()
> fail.  It seems that pkg-config stuff is only initialized in the
> GTK_DOC_CHECK macro.

Please commit (remember the one-line summary needs to start with a
non-capital letter); thanks!

     David