use * for pointer type instead of &

See #770

To help automatically translate code, see the
zig-fmt-pointer-reform-2 branch.

This will convert all & into *. Due to the syntax
ambiguity (which is why we are making this change),
even address-of & will turn into *, so you'll have
to manually fix thes instances. You will be guaranteed
to get compile errors for them - expected 'type', found 'foo'

std/elf.zig

@@ -338,7 +338,7 @@ pub const SectionHeader = struct {
 };
 
 pub const Elf = struct {
-    in_file: &os.File,
+    in_file: *os.File,
     auto_close_stream: bool,
     is_64: bool,
     endian: builtin.Endian,
@@ -348,20 +348,20 @@ pub const Elf = struct {
     program_header_offset: u64,
     section_header_offset: u64,
     string_section_index: u64,
-    string_section: &SectionHeader,
+    string_section: *SectionHeader,
     section_headers: []SectionHeader,
-    allocator: &mem.Allocator,
+    allocator: *mem.Allocator,
     prealloc_file: os.File,
 
     /// Call close when done.
-    pub fn openPath(elf: &Elf, allocator: &mem.Allocator, path: []const u8) !void {
+    pub fn openPath(elf: *Elf, allocator: *mem.Allocator, path: []const u8) !void {
         try elf.prealloc_file.open(path);
-        try elf.openFile(allocator, &elf.prealloc_file);
+        try elf.openFile(allocator, *elf.prealloc_file);
         elf.auto_close_stream = true;
     }
 
     /// Call close when done.
-    pub fn openFile(elf: &Elf, allocator: &mem.Allocator, file: &os.File) !void {
+    pub fn openFile(elf: *Elf, allocator: *mem.Allocator, file: *os.File) !void {
         elf.allocator = allocator;
         elf.in_file = file;
         elf.auto_close_stream = false;
@@ -503,13 +503,13 @@ pub const Elf = struct {
         }
     }
 
-    pub fn close(elf: &Elf) void {
+    pub fn close(elf: *Elf) void {
         elf.allocator.free(elf.section_headers);
 
         if (elf.auto_close_stream) elf.in_file.close();
     }
 
-    pub fn findSection(elf: &Elf, name: []const u8) !?&SectionHeader {
+    pub fn findSection(elf: *Elf, name: []const u8) !?*SectionHeader {
         var file_stream = io.FileInStream.init(elf.in_file);
         const in = &file_stream.stream;
 
@@ -533,7 +533,7 @@ pub const Elf = struct {
         return null;
     }
 
-    pub fn seekToSection(elf: &Elf, elf_section: &SectionHeader) !void {
+    pub fn seekToSection(elf: *Elf, elf_section: *SectionHeader) !void {
         try elf.in_file.seekTo(elf_section.offset);
     }
 };