Detect binaries produced with GCC 8.3.0 for e500v2

[Alexander F. Rødseth]

Make e500v2_gcc8 be detected correctly:

https://github.com/xyproto/elfinfo/tree/master/testfiles

The current output is:

GCC 1.24.0

But it should be:

GCC 8.3.0

[Alexander F. Rødseth]

Fixed in 50f85bb