Simplify vanitygen to -u address-list mode; remove all non-needed code paths and cleanup bruteforce implementation

[stud0709]

This pull request constrains vanitygen to the address-list matching mode (-u) and removes all code paths related to other generation modes. The project is streamlined to load an address list and match candidates against the 21-byte payload (version + hash160) of Base58Check addresses.

What changed

• vanitygen/vanitygen.c
  • Dropped support for all modes except -u. CLI parsing now only handles -u, -t, -1, -a, -v, -q, -o, -z.
  • The main flow now loads an address list from a file or stdin, initializes a bruteforce context, and runs the -u matcher.
  • usage() and messaging reflect that only address-list matching is supported.
  • Simplified output handling and thread setup suitable for -u mode.
• vanitygen/bruteforce.c / bruteforce.h
  • Reworked for address-list matching context. Payloads are stored with their corresponding address strings, and hashing buckets contain bruteforce_entry_t entries with payload and address.
  • Hashing uses the 21-byte payload (version + hash160) extracted from each decoded address.
  • bruteforce_test() now detects a payload match and reports the matching address, then controls flow based on -1/-a and -u semantics.
  • Context lifecycle and utility functions adjusted to support -u mode only.
• vanitygen/tests
  • Added vanitygen/tests/test_bruteforce.cpp: a minimal unit test that loads a known address, decodes it to a payload, and asserts that bruteforce_test() finds a match and emits the address via the test harness.
  • vanitygen/tests/README.md added to document the new -u mode tests.
• vanitygen/vanitygen.c changes also reflect a removal of legacy code paths and headers that were only used by other modes. This includes removing references to ed25519, base32, crc16, simplevanitygen, segwit_addr, stellar, and similar components not required for -u.
• README.md
  • Added a note stating that vanitygen.c has been simplified to support only address-list matching mode (-u).
• Build metadata
  • vcxproj and vcxproj.filters updated to drop unused sources/headers for non--u features to keep the build minimal.

How this solves the issue

• The tool now focuses exclusively on matching against a provided address list, which was the requested mode. All extraneous modes were removed, reducing complexity and potential surface area for bugs.
• The bruteforce context stores address entries in a way that is efficient for -u matching, and the test confirms the core path from loading addresses to reporting a match works as intended.

Usage (for -u mode)

• Build oclvanitygen as usual.
• Provide an address list file (one per line) and run vanitygen with -u to search against that list. Other options are deprecated in this fork and not supported.

Notes

• The changes include changes to headers and project files to align with the single-mode focus and reduce compilation dependencies.
• A minimal unit test is included to verify the address-list load and match path working end-to-end.

https://cosine.sh/stud0709/vaintygen/task/b1hfj8pxm49r
https://cosine.sh/gh/stud0709/vaintygen/pull/1
Author: Yuriy Dzhenyeyev