mem: rename align*Generic to mem.align*

Anecdote 1: The generic version is way more popular than the non-generic
one in Zig codebase:

     git grep -w alignForward | wc -l
    56
     git grep -w alignForwardGeneric | wc -l
    149

     git grep -w alignBackward | wc -l
    6
     git grep -w alignBackwardGeneric | wc -l
    15

Anecdote 2: In my project (turbonss) that does much arithmetic and
alignment I exclusively use the Generic functions.

Anecdote 3: we used only the Generic versions in the Macho Man's linker
workshop.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/codegen/spirv.zig b/src/codegen/spirv.zig
index 4fd91aded4..dc1f23dad4 100644
--- a/src/codegen/spirv.zig
+++ b/src/codegen/spirv.zig
@@ -472,12 +472,12 @@ pub const DeclGen = struct {
             try self.initializers.append(result_id);
 
             self.partial_word.len = 0;
-            self.size = std.mem.alignForwardGeneric(u32, self.size, @sizeOf(Word));
+            self.size = std.mem.alignForward(u32, self.size, @sizeOf(Word));
         }
 
         /// Fill the buffer with undefined values until the size is aligned to `align`.
         fn fillToAlign(self: *@This(), alignment: u32) !void {
-            const target_size = std.mem.alignForwardGeneric(u32, self.size, alignment);
+            const target_size = std.mem.alignForward(u32, self.size, alignment);
             try self.addUndef(target_size - self.size);
         }