uid_daemon should identify itself as a bash script

[szelenka]

Describe the bug
bin/common/uid_daemon.sh declares itself as a shell script, but attempts to use a bash source instead of .

To Reproduce
Steps to reproduce the behavior:

1. In pgpool attempt to execute uid_daemon.sh
2. /opt/crunchy/bin/uid_daemon.sh: 21: source: not found

Expected behavior
This should probably be a bash script, or change the method to source to the shell equivalent .

Workaround is to explicitly specify you want a bash shell to execute uid_daemon.sh