Fix KWSys FundamentalType for Universal Binaries
The FundamentalType header needs to know type sizes at preprocessing time. This commit teaches it to avoid using CHECK_TYPE_SIZE because the macro does not work for types whose size varies across architectuers in Mac OS X universal binaries. Fortunately the Mac compilers provide just enough information to detect the needed type sizes during preprocessing. We now use preprocessor macros instead of configuration tests whenever they are available. As a side effect this reduces the number of try-compiles needed with GCC. See issue #9913.
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