Correction for the fix for Bug 3508 - Persistent storage support breaks Linux compatibility.
A 2nd `make install' will fail attempting to create symlink libnvmemmory.so already created by 1st install.
Install should pre-emptively delete it.
#
# QEMU SYBORG ESTART.TXT
#
D: 0 ELOCAL FAT 0 FS_FORMAT_COLD,FS_SYNC_DRIVE # IRAM
C: 1 ELOCAL FAT 0 FS_FORMAT_CORRUPT,FS_NOT_RUGGED # NVMEM