Set version to 2.11.3

Set version to 2.11.3-rc3

Merge pull request #47 from mjrider/fix-silent-zip-disabled

If zip is not available, but is configured, give an error instead of …

Replaced make_version() by a simple string; set version to 2.11.3-rc1 (…

…#43)

* Replaced make_version() by a simple string
* Set version to 2.11.3-rc1
* Code formatting

Set version to 2.11.2p4

2.11.2p3