change opendove.spec to use libevent_devel instead of libevent2_devel

- Also fixed some rm calls to be rm -f in case the files do not exist.
- Also fixed soem changelog versions.

Change-Id: I0437f6c800ee804403a33db3d0668ee756e2ce4d
Signed-off-by: Sam Hague <shague@redhat.com>
Merge "change opendove.spec to use libevent_devel instead of libevent2_devel"