'rizin' is missing a lot of syscalls for i.e. arm. We can check that
with:
rizin -a x86_64 -b 64 -k linux -q -c asl
vs
rizin -a arm -b 64 -k linux -q -c asl
'rz_syscall_item_new_from_string' splits the incoming string by commas
and expects at least 3 items as a result. This patch fixes
syscall preprocessing by appending empty strings to match the expected
number of items after a split.
This is a clone of a fix posted to radare2 [1].
[1] https://github.com/radareorg/radare2/pull/21508
Multiline scripts had issues on my windows system while building
from `cmd`. I removed some "pre_sdb" scripts used to read symlinks
because there are only two and it's probably easier to just avoid
symlinks for better portability.
Also moved a bunch of inlined script to separate files in sys/.
