Produce longer release notes if --long switch passed
Produce longer release notes if --long switch passed

Note also that we just use "git log --pretty=format" rather than piping
through "git shortlog".

There is a strange behavioural discrepancy here with newlines depending
on whether the script is run interactively or via Xcode; work around it
by just echo a blank line rather than trying to pass "\n".

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

wincent/buildtools,wincent/buildtools,wincent/buildtools