Several standard compliance efforts plus some enhancements

What's Changed

• remove duplicate 'v' character in version info by @alishir in #511
• Demote benign parameterized type diagnostic to debug by @visstro in #519
• Fix PER constraint emission for CHOICE typedefs + regression test by @Copilot in #520
• converter: fix skip_bits multi-PDU misalignment, remove unused buffer_dump, fix bytes_shifted accumulation by @Copilot in #521
• Address PR #512 review feedback for unsigned INTEGER UPER support by @Copilot in #522
• NativeInteger BER: fix unsigned sign-pad encoding and harden uint64 regression test portability by @Copilot in #523
• PrintableString: fix UPER 7-bit encoding truncation and add regression test by @Copilot in #524
• Fix naming collision for anonymous members in multiple SEQUENCE OF/SET OF types by @Copilot in #531
• Revert UInteger type infrastructure and dependent tests by @Copilot in #530
• libasn1fix: fix wrong type selected when two modules export the same name (-fprefer-import-source) by @Copilot in #535
• ILP32 build and cross-build by @mouse07410 in #540
• Xer octet string base64 by @mouse07410 in #542

Full Changelog: v1.4.2...v1.5.0