spdx-licenses-list: update to 3.19.

Also:
- update common/travis/license.lst.

common/travis/license.lst

@@ -185,6 +185,7 @@ FLTK-exception
 FSFAP
 FSFUL
 FSFULLR
+FSFULLRWD
 FTL
 Fair
 Fawkes-Runtime-exception
@@ -251,6 +252,7 @@ JSON
 Jam
 JasPer-2.0
 KiCad-libraries-exception
+Knuth-CTAN
 LAL-1.2
 LAL-1.3
 LGPL-2.0-only
@@ -479,6 +481,7 @@ Zimbra-1.4
 Zlib
 blessing
 bzip2-1.0.6
+checkmk
 copyleft-next-0.3.0
 copyleft-next-0.3.1
 curl
@@ -527,6 +530,7 @@ iMatix
 libpng-2.0
 libselinux-1.0
 libtiff
+libutil-David-Nugent
 mif-exception
 mpi-permissive
 mpich2
@@ -535,6 +539,7 @@ openvpn-openssl-exception
 psfrag
 psutils
 u-boot-exception-2.0
+x11vnc-openssl-exception
 xinetd
 xpp
 zlib-acknowledgement