[rust] fix bindgen imports

- update blacklist rules
- use ffi `__va_list_tags`

rust/build/build.rs

@@ -30,11 +30,17 @@ fn main() {
         .generate_comments(true)
         .clang_arg("-fretain-comments-from-system-headers")
         .clang_arg("-fparse-all-comments")
+        // Remove warnings about improper_ctypes
+        .blacklist_function("strtold")
+        .blacklist_function("wcstold")
+        .blacklist_function("socketpair")
         // only import functions from notcurses public API
-        .blacklist_function("[^n].*")
+        .blacklist_function("[^ns].*")
         .blacklist_function("n[^co].*")
-         // clean more unneeded types
-        .blacklist_item("_[A-FHJ-Z].*")
+        .blacklist_function("s[^i].*") // allow sig*
+        // clean more unneeded types
+        .blacklist_item("_BITS.*")
+        .blacklist_item("_POSIX.*")
         .blacklist_item("__[A-Z].*")
         .blacklist_item("[ADHJ-MQ-Z].*")
         .blacklist_item("IP[^R].*")

rust/src/plane/reimplemented.rs

@@ -2,7 +2,7 @@
 
 use core::ptr::null_mut;
 
-use crate::__va_list_tag;
+use crate::ffi::__va_list_tag;
 use crate::{
     cstring, nccell_release, NcAlign, NcAlphaBits, NcBoxMask, NcCell, NcChannel, NcChannelPair,
     NcColor, NcDim, NcEgc, NcIntResult, NcPlane, NcRgb, NcStyleMask, NCRESULT_ERR, NCRESULT_OK,