acinclude.m4: Disable -Winline warnings

GCC 14.2.1 gives warnings like:

In file included from memory.h:26,
                 from augmatch.c:30:
In function ‘guess_lens_name’,
    inlined from ‘main’ at augmatch.c:396:16:
internal.h:229:19: error: inlining failed in call to ‘streqv’: call is unlikely and code size would grow [-Werror=inline]
  229 | static inline int streqv(const char *a, const char *b) {
      |                   ^~~~~~
augmatch.c:294:9: note: called from here
  294 |     if (streqv(ext, ".json")) {
      |         ^~~~~~~~~~~~~~~~~~~~

These warnings don't seem very useful in Augeas, since we are not so
sensitive to code size and don't care about inlining "purity".  Rather
than attempting to "fix" code which isn't really broken, I chose to
disable an unhelpful warning.

Signed-off-by: Richard W.M. Jones <[email protected]>

acinclude.m4

@@ -2,7 +2,7 @@ dnl
 dnl Taken from libvirt/acinclude.m4
 dnl
 dnl We've added:
-dnl   -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls
+dnl   -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wredundant-decls
 dnl We've removed
 dnl   CFLAGS="$realsave_CFLAGS"
 dnl   to avoid clobbering user-specified CFLAGS
@@ -34,7 +34,7 @@ AC_DEFUN([AUGEAS_COMPILE_WARNINGS],[
     maximum|error)
 	try_compiler_flags="-Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith"
 	try_compiler_flags="$try_compiler_flags -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return"
-	try_compiler_flags="$try_compiler_flags -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare"
+	try_compiler_flags="$try_compiler_flags -Wstrict-prototypes -Wredundant-decls -Wno-sign-compare"
 	try_compiler_flags="$try_compiler_flags $common_flags"
 	if test "$enable_compile_warnings" = "error" ; then
 	    try_compiler_flags="$try_compiler_flags -Werror"