Fix updateBuildVersion bug so we don't always rebuild version.cpp

The updateBuildVersion script had a bug that caused it to always think there
was a new version. It was testing ("versionNum" eq versionNum), including
quotes as characters for one of the strings, so they are always different.
This just removes the quotes.
Merge pull request #158 from daviditen/updateBuildVersion

Fix updateBuildVersion bug so we don't always rebuild version.cpp

The updateBuildVersion script had a bug that caused it to always think there
was a new version. It was testing ("versionNum" eq versionNum), including
quotes as characters for one of the strings, so they are always different.
This just removes the quotes.

[reviewed by hildeth]