strncasecmp fix and optimizations #480
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Fixes #479 with a new
strncasecmpimplementation.Removes linking to OS versions of
tolower/toupperwhich return the wrong value for EOF, and adds internal entrypoints to the toolchain versions to avoid C ABI overhead.Also adds an optimized version of
strcasecmp, which shares some code with the newstrncasecmpfor size optimization.