[CMake] Pull in project version number from file

[Richard Shaw]

I'm working on converting a small project from autotools to cmake and one
of the final nit-pick issues is that the version of the software is defined
in a file, version.h as #defines.

I haven't been able to find the magic incantation of file(READ...,
string(REGEX MATCH... to parse the version numbers. I did request that the
version be managed within the cmake config but that was not accepted.

The meaningful entries in version.h are:

#define FREEDV_VERISON_MAJOR "0"
#define FREEDV_VERSION_MINOR "96"
#define FREEDV_VERSION_PATCH "3"
#define FREEDV_VERSION_SUFFIX "Beta"

Any hints would be appreciated.

Thanks,
Richard
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