Allow selectable ramdisk mountpoint location

It defaulted to /var/nagios/ramcache which doesn't flux well with some
platforms/distributions.
Update deprecated attributes in sample config

* Changed normal_check_interval to check_interval
* Changed retry_check_interval to retry_interval

According to the documentation the old attribute names should
no longer exist, so switching to the newer documented behavior.

It should not change the behavior of a running environment, but it
can cause a lot of confusion when there is a mix of check_interval
and normal_check_interval in the same configuration object.
Merge pull request #1 from tomas-edwardsson/master

Allow selectable ramdisk mountpoint location
Merge pull request #2 from palli/fix-deprecated-attributes

Update deprecated attributes in sample config
added script to determine current version

if exactly on tag, it returns the tag itself, ex.: 4.0.2
otherwise it returns the incremented last tag plus the
current date, ex.: 4.0.3_20131112

It works great with the update version script
ex.: ./update-version $(./get_version)
which is used for automatic builds.
removed some autogenerated files

these files are autogenerated and should therefor not be included in the repository.