travis: use NetBSD bmake instead of fmake

.travis.yml

@@ -11,7 +11,7 @@ matrix:
 
 before_install:
 - sudo apt-get update -qq
-- sudo apt-get install -qq freebsd-buildutils libelf-freebsd-dev liblua5.2-dev libsqlite3-dev
+- sudo apt-get install -qq freebsd-buildutils bmake libelf-freebsd-dev liblua5.2-dev libsqlite3-dev
 - ci/install_atf.sh
 - ci/install_lutok.sh
 - ci/install_kyua.sh
@@ -24,15 +24,15 @@ cache:
    - /home/travis/kyua
 
 install:
-  fmake CFLAGS="-I/usr/include/freebsd/ -ftest-coverage -fprofile-arcs" LIBELF=-lelf-freebsd LIBATF_C=/usr/lib/libatf-c.a
+  bmake CFLAGS="-I/usr/include/freebsd/ -ftest-coverage -fprofile-arcs" LIBELF=-lelf-freebsd LIBATF_C=/usr/lib/libatf-c.a
 
 script:
-  fmake CFLAGS="-ftest-coverage -fprofile-arcs" LIBELF=-lelf-freebsd LIBATF_C=/usr/lib/libatf-c.a check
+  bmake CFLAGS="-ftest-coverage -fprofile-arcs" LIBELF=-lelf-freebsd LIBATF_C=/usr/lib/libatf-c.a check
 
 notifications:
   webhooks:
     urls:
       - https://webhooks.gitter.im/e/53c5f65b01f3b0095e35
     on_success: change
     on_failure: always
-    on_start: never
+    on_start: never