std.process: currentDir -> currentPath

In Zig standard library, Dir means an open directory handle. path
represents a file system identifier string. This function is better
named after "current path" than "current dir". "get" and "working" are
superfluous.

tools/doctest.zig

@@ -33,7 +33,7 @@ pub fn main(init: std.process.Init) !void {
     const arena = init.arena.allocator();
     const io = init.io;
     const environ_map = init.environ_map;
-    const cwd_path = try std.process.currentDirAlloc(io, arena);
+    const cwd_path = try std.process.currentPathAlloc(io, arena);
 
     try environ_map.put("CLICOLOR_FORCE", "1");
 

tools/incr-check.zig

@@ -32,7 +32,7 @@ pub fn main(init: std.process.Init) !void {
     const arena = init.arena.allocator();
     const io = init.io;
     const environ_map = init.environ_map;
-    const cwd_path = try std.process.currentDirAlloc(io, arena);
+    const cwd_path = try std.process.currentPathAlloc(io, arena);
 
     var opt_zig_exe: ?[]const u8 = null;
     var opt_input_file_name: ?[]const u8 = null;

tools/process_headers.zig

@@ -145,7 +145,7 @@ pub fn main(init: std.process.Init) !void {
     const arena = init.arena.allocator();
     const io = init.io;
     const args = try init.minimal.args.toSlice(arena);
-    const cwd_path = try std.process.currentDirAlloc(io, arena);
+    const cwd_path = try std.process.currentPathAlloc(io, arena);
     const environ_map = init.environ_map;
 
     var search_paths = std.array_list.Managed([]const u8).init(arena);

tools/update-linux-headers.zig

@@ -146,7 +146,7 @@ pub fn main(init: std.process.Init) !void {
     const io = init.io;
     const args = try init.minimal.args.toSlice(arena);
     const environ_map = init.environ_map;
-    const cwd = try std.process.currentDirAlloc(io, arena);
+    const cwd = try std.process.currentPathAlloc(io, arena);
 
     var search_paths = std.array_list.Managed([]const u8).init(arena);
     var opt_out_dir: ?[]const u8 = null;