Add -walletnotify to call an external script on wallet transactions
Merge branch 'master' into release-0.1.2
Merge branch 'release-0.1.2' into dev-0.1.2
[core] transaction,notifier,wip: http transaction notifier skeleton.
Merge branch 'master' into release-0.1.2
Merge branch 'release-0.1.2' into dev-0.1.2
Merge branch 'dev-0.1.2' into transaction-notifier
[qtclient] minor,image: closes issue #11

 - custom splash screen image.
Merge branch 'custom_splash' into dev-0.1.2
Merge branch 'master' into release-0.1.2
[qtclient] version,minor: release branch still considered as a test build.
Merge branch 'release-0.1.2' into dev-0.1.2
Merge branch 'dev-0.1.2' into release-0.1.2
[qtclient] minor,log: window position log output removed.
[core] transaction,notifier: include dir for threadpool.
Merge branch 'dev-0.1.2' into transaction-notifier
Merge remote branch 'upstream/master' into merge_upstream
Merge branch 'merge_upstream' into dev-0.1.2
Merge branch 'dev-0.1.2' into transaction-notifier
[qtclient] about,minor: closes issue #2

 - Bitcoin developers credit line added.