Make the alignment computations of the frontend match the llvm default alignment. Breaks run/double_03 because it assumes double.alignof >= 8, which does not seem to be the case for llvm.

#ifndef _GNUC_H
#define _GNUC_H 1

int memicmp(const char *s1, const char *s2, int n);
int stricmp(const char *s1, const char *s2);

#endif