Defines starting with `a' in bsd/include

• _A bsd/include/ctype.h:73
• AR_EFMT1 bsd/include/ar.h:78
• AREGTYPE bsd/include/tar.h:73
• ARFMAG bsd/include/ar.h:87
• _AR_H_ bsd/include/ar.h:69
• ARMAG bsd/include/ar.h:75