Fix check for GNU C compiler in eina_cpu.c
On the OpenCSW Solaris platform, the test for the GNU C compiler fails.
IMO, the test should be GNUC instead of GNU.
Checklist
- [*] Code modified for feature
Reviewer's checklist:
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Any issues marked for closing are addressed -
There is a test suite reasonably covering new functionality or modifications -
Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTION.md
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This feature/change has adequate documentation added -
No obvious mistakes in the code
Edited by Nikos Mavrogiannopoulos