cleaned up boot entries in relchk, added todo for bootsync

TODO

@@ -0,0 +1,47 @@
+Incorporate prep.txt with config file?
+should look something like this:
+
+#!/usr/bin/env python
+
+import os
+import re
+import shutil
+import subprocess
+
+esp = {'/dev/vdb': ('Arch (Fallback)', '/mnt/boot2'),
+       '/dev/vda': ('Arch', '/mnt/boot1')}
+part = 1
+
+for dev, (label, mnt) in esp.items():
+    grubdir = os.path.join(mnt, 'grub')
+    if os.path.isdir(grubdir):
+        shutil.rmtree(grubdir)
+    efi = subprocess.run(['efibootmgr'], stdout = subprocess.PIPE)
+    efi_lines = efi.stdout.decode('utf-8').strip().splitlines()
+    efi_entries = {}
+    for l in efi_lines:
+        i = l.split(None, 1)
+        k = i[1].strip()
+        v = re.sub(r'^Boot(?P<boot_id>[A-Fa-f0-9]+).*$', r'\g<boot_id>', i[0])
+        efi_entries[k] = v
+    boot_id = efi_entries.get(label)
+    if not boot_id:
+        print('Could not find {0}'.format(label))
+    else:
+        cmd = subprocess.run(['efibootmgr',
+                              '-b', boot_id,
+                              '-B'],
+                             stdout = subprocess.PIPE)
+    cmd = subprocess.run(['grub-install',
+                          '--boot-directory={0}'.format(mnt),
+                          '--bootloader-id=Arch',
+                          '--efi-directory={0}'.format(mnt),
+                          '--target=x86_64-efi',
+                          '--no-nvram',
+                          '--recheck'])
+    cmd = subprocess.run(['efibootmgr',
+                          '--create',
+                          '--disk', dev,
+                          '--part', str(part),
+                          '--loader', '/EFI/Arch/grubx64.efi',
+                          '--label', label])