Merge branch 'bugfix/PLCR-542-fix-aarch64-alignment-issues' into release/plcrashreporter-1.2
Fixing the handling of DW_OP_bregx.

According to the DWARF4 spec:
The DW_OP_bregx operation has two operands: a register which is
specified by an unsigned LEB128 number, followed by a signed LEB128
offset.

Issue: PLCR-545
Merge branch 'release/plcrashreporter-1.2'