Bump version to 0.2.4.0 to trigger a new SyzyProf RC build.
Bump version to 0.2.4.0 to trigger a new SyzyProf RC build.

R=joi@chromium.org,robertshield@chromium.org

Review URL: https://codereview.appspot.com/6306081

git-svn-id: db59699583a60be9a535cd09cdc9132301867226@902 15e8cca8-e42c-11de-a347-f34a4f72eb7d

ericmckean/syzygy,sebmarchand/syzygy,pombreda/syzygy,wangming28/syzygy,pombreda/syzygy,google/syzygy,google/syzygy,Eloston/syzygy,Eloston/syzygy,pombreda/syzygy,pombreda/syzygy,ericmckean/syzygy,sebmarchand/syzygy,sebmarchand/syzygy,supriyantomaftuh/syzygy,sebmarchand/syzygy,pombreda/syzygy,ericmckean/syzygy,google/syzygy,wangming28/syzygy,supriyantomaftuh/syzygy,google/syzygy,ericmckean/syzygy,wangming28/syzygy,wangming28/syzygy,sebmarchand/syzygy,supriyantomaftuh/syzygy,supriyantomaftuh/syzygy,ericmckean/syzygy