master branch between 0.99.19 and 0.99.20

master  RE-stable-0.99 RE-testing-0.99 summary
******* ************** *************** *******
37075da b38639c        b060a86         doc: add missing word
c31e572 99dc869        65af426         doc: BGP route-flap dampening
3c9cfcd 1740f9e        1740f9e         ospfd: remove useless RFC1583 check
83d1614 257c0eb        6453e5f         zebra: fix loss of metric for Linux routes
b69442d 3f0d3a1        95647cf         configure: dismiss libutil.h
5574999 d0d2997        c99fd42         isisd: fix crash on "no router isis" (BZ#536)
8998075 4e60f63        5bbf051         isisd: raise hello rate for DIS (BZ#539)
306ca83 a7c21ec        24b7ef5         isisd: include hash.h, not hash.c
2b43bf2 5112233        5112233         configure: fix FreeBSD header detection (BZ#408)
75d044d c8049c1        9ef5c65         ospf6d: fix crash on filter-list handling (BZ#530)
5fdaa04 4fe20b3        b7805ce         ospf6d: add lost lines to area config block
d68ab10 ea15b20        ea15b20         bgpd: consistent log msg format (BZ#565)
1212dc1 2e35e96        e088bfe         bgpd: add useful notification logs (BZ#616)
0ea968d d0511bd        6f3b7a9         bgpd: check LOCAL_PREF attribute flags (BZ#674)
2cfadf0 7d25f18        197fb41         bgpd: check MULTI_EXIT_DISC attr flags (BZ#677)
9eba2ad ca22cc4        cfa5847         bgpd: check ATOMIC_AGGREGATE attr flags (BZ#678)
6159928 4a1342a        4a1342a         configure: fix OpenPAM detection
b82cdeb cbfbf2f        cbfbf2f         delete CVS keywords
3a8c3dd c69f91b        c69f91b         lib: remove unused variable
ea40219 9fa6be7        9fa6be7         ospf6d: spelling
69bf3a3 bf510e9        bf510e9         lib: simplify interface of setsockopt_multicast_ipv4().
e0afa6f 87d2903        87d2903         lib: fix omission in the previous commit to lib/sockopt.c
ee7e75d 96a0a39        96a0a39         lib: futher simplification of setsockopt_ipv4_multicast()
10d04cd d6af701        d6af701         lib: use "protocol-independed API" from RFC3678, if that is available
05b7709 68aa0c5        68aa0c5         ospfd: sizing macros cleanup
87362ce 3308354        3308354         ospf6d: address more trivial compiler warnings
7dbeea9 6954214        6954214         zebra: add missing includes
171c9a9 4f151e5        4f151e5         ospfd: use existing macro for consistency
7ccf5e5 71008de        71008de         bgpd: spelling
e6ec1c3 6787978        6787978         bgpd: spelling
bcc6c59 e00d4e2        e00d4e2         ospfd: spelling
eda3529 dda8187        aa4edc5         configure: test for glibc backtrace even without glibc.
51abba5 614da2b        03d3cdf         lib: provide more information in case of failed LOOKUP.
4b4e07d c347846        e2979fa         bgpd: don't be confused by "unspecific" subcode in the NOTIFY message.
52ecbbe 254f118        ff5590c         ospfd: remove unused macro
3aad46b 992d4d1        56a2308         ospfd: fix regression in recent commit