* Added code to fixup definitions provided through .build.cs files. There are actually strict rules around the syntax of defines (reading msvc documentation). There should be no space before or after the '=' character. so "MY_DEFINE = 1" is actually invalid. When building with header units this actually produce invalid data but in normal builds it seems to swallow it (even though the documentation says it shouldn't)
I would have wanted to fix the code producing bad definition format but it is in a whole bunch of modules so I suspect external teams might have this too, so instead we fix it up by trimming the strings before and after '='
#preflight 63b894b9221aab21e0970eb0
#rb none
[CL 23605565 by henrik karlsson in ue5-main branch]
c6f15b80c3