BUILD: makefile: sort the features list

The features list that appears in -vv appears in a random order, which
always makes it a pain to look for certain features. Let's sort it.

(cherry picked from commit 848362f2d2251fe90236754c3a78d18a42068e81)
[wt: applied to Makefile]
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit a99f189732d6f2c1c2e99cf39d4b3a17b4e040c8)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 039e90dcc699af07c524403db14bc6af46441c41)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit df632bab4e657b8a75204ff639688194499e9c10)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed