fix(windows): Fix c_long ABI mismatch causing Windows CI failures

[cfsmp3]

Summary

Fixes Windows-specific CI test failures caused by platform-dependent type issues in the C/Rust FFI layer.

Problem

The C type long has different sizes on different platforms:

• Linux: 64-bit
• Windows: 32-bit

This caused ABI mismatches when interfacing with Rust, since Rust's c_long matches the platform's long size.

Changes

1. Fix ABI mismatch in demuxer.rs (Commit 1)

The extern declaration for ccxr_add_current_pts used c_long, but the actual implementation uses i64:

// Before (WRONG on Windows)
fn ccxr_add_current_pts(ctx: *mut ccx_common_timing_ctx, pts: c_long);

// After (CORRECT)
fn ccxr_add_current_pts(ctx: *mut ccx_common_timing_ctx, pts: i64);

2. Replace all long with int64_t in C code (Commit 2)

Changed the following fields from long to int64_t:

File	Fields Changed
asf_constants.h	parsebufsize
avc_functions.h	cc_databufsize, num_nal_unit_type_7, num_vcl_hrd, num_nal_hrd, num_jump_in_frames, num_unexpected_sei_length
ccx_decoders_608.h	bytes_processed_608
ccx_demuxer.h	capbufsize, capbuflen
lib_ccx.h	ts_readstream() return type, FILEBUFFERSIZE

Also updated Rust code in common.rs to remove c_long casts (bindgen will now generate i64 for these fields).

Expected Impact

Should fix Windows-specific failures in:

• Tests 226-230 (startcredits) - corrupted output
• Tests 28, 37, 136 (General) - timing offsets
• Possibly Test 21 (DVB) and Test 162 (spupng)

Test Plan

• Builds successfully on Linux
• Rust clippy passes with no warnings
• Windows CI should show improvement in failing tests

🤖 Generated with Claude Code

[ccextractor-bot]

CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit 25d68b7...:

Report Name	Tests Passed
Broken	13/13
CEA-708	14/14
DVB	7/7
DVD	3/3
DVR-MS	2/2
General	27/27
Hardsubx	1/1
Hauppage	3/3
MP4	3/3
NoCC	10/10
Options	86/86
Teletext	21/21
WTV	13/13
XDS	34/34

Congratulations: Merging this PR would fix the following tests:

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All tests passing on the master branch were passed completely.

Check the result page for more info.