manual: AC_SEARCH_LIBS prepends to LIBS.

[Ralf Wildenhues]

I think this should be part of the documented API, just
as it is already documented for AC_CHECK_LIB.

It makes little sense to check libraries in a different
order than from the lowest level to the higher ones.

OK?

Thanks,
Ralf

    manual: AC_SEARCH_LIBS also prepends to LIBS.
    
    * doc/autoconf.texi (Libraries): Document that AC_SEARCH_LIBS
    prepends to LIBS, just like AC_CHECK_LIB.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 01ce214..2f83ca1 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -4417,7 +4417,7 @@ Libraries
 @samp{AC_LINK_IFELSE([AC_LANG_CALL([], address@hidden)])} first with
 no libraries, then for each library listed in @var{search-libs}.
 
-Add @address@hidden to @code{LIBS} for the first library found
+Prepend @address@hidden to @code{LIBS} for the first library found
 to contain @var{function}, and run @var{action-if-found}.  If the
 function is not found, run @var{action-if-not-found}.
 
@@ -4431,7 +4431,7 @@ Libraries
 The result of this test is cached in the
 @address@hidden variable as @samp{no}, if no library
 containing @var{function} was found, otherwise as the
address@hidden@var{library}} option that needs to be added to @code{LIBS}.
address@hidden@var{library}} option that needs to be prepended to @code{LIBS}.
 @end defmac