allow multiples hook
suggested by Vadim Gelfer
This patch allows to have multiple hooks of the same kind:
for example
commit.email = /my/email/hook
commit.autobuild = /my/build/hook
#!/bin/shhghg -qhg helphg -q helphg add -hhg add --skjdfkshg help diffhg help statushg -q help statushg help foohg skjdfksexit 0