cmake HAVE_EILSEQ examples

libarchive/libarchive CMakeLists.txt :1628 

CHECK_SYMBOL_EXISTS(EILSEQ           "errno.h"    HAVE_EILSEQ)

alibaba/AliSQLBackup storage/innobase/xtrabackup/src/libarchive/CMakeLists.txt :551 

CHECK_SYMBOL_EXISTS(EILSEQ           "errno.h"    HAVE_EILSEQ)