Run vs build time version

[staabm]

added warning when build-time propel version and runtime-propel version do not match

see #577

[willdurand]

yay, bad rebase?

[staabm]

soo, after some hardcore rebase action the PR should be clean

[jaugustin]

@willdurand is this a wanted modification ?

[staabm]

This is required for the check to work properly, because otherwise the git version and the latest stable version could not be differentiated (dont't know if propel defines its version also in other places?)

[staabm]

the first commit showed that the feature works as expected and the second fixes the version constants for the unit tests to pass.

the implemented check does not work when propel is initialized using the runtime-conf.xml, because it does not define the generator version. should I just add an isset-check, since it will be available after the xml-conf was converted into a php-file...?

[staabm]

ready to go.

[willdurand]

Thanks