Fix symbol impot names(PE EXE)
Handle ET_REL ELF relocs, asm.cpu for arm.cs: v8, mcortex
Fix #1889 - Update sdb to fix a segfault in sdb_sync (thanks zlul!)
Some cppcheck reports fixed:

(warning) Logical disjunction always evaluates to true: regnum < 32 || regnum > 31
(style) Same expression on both sides of '||'
(style) Same expression on both sides of '&&'
(style) Expression is always false because 'else if' condition matches previous condition at line 180
Bump sdb fixing two memleaks and a close(-1)
cppcheck: fix memory leaks