[GR-50985] Set alignment to 1 for Java DWARF debug info sections

[esytnik]

This PR addresses cases when GraalVM sometimes generates corrupted debug info by ensuring that debug sections have alignment set to 1.

Current we mistakenly generate debug info sections with alignment of 8 (for 64-bit OS) and this causes linker to generate corrupt debug info when it has several object files with debug info with different alignment. For example on Alpine Linux crt1.o and crti.o libraries have debug information section with alignment of 1. Linker writes those sections first and then pads to alignment of 8 before processing Graal-generated debug info section because it has alignment of 8.

Evidently calling newUserDefinedSection was an oversight as newDebugSection method already has a comment on this exact issue:

                                 // debugging information is mostly unaligned; padding can result in
                                 // corrupted data when the linker merges multiple debugging
                                 // sections from different inputs

See ##4574 for more insight.

[adinn]

Doh! Thank you for spotting this @esytnik !

[adinn]

@olpaw @fniephaus Could you approve the workflow to check this patch and also help review and commit it?

[adinn]

It should fix the problem reported in #4574

[fniephaus]

LGTM

[esytnik]

It should fix the problem reported in #4574

as well as #3452