Rework section alignment handling

- Honor splits.txt alignment values when writing ldscript.lcf
- Add alignment values to ldscript_partial.lcf, remove hacky code from rel make
- Guess alignment values in DOL loader

Fixes #27

assets/ldscript_partial.lcf

@@ -2,13 +2,7 @@ SECTIONS
 {
     GROUP:
     {
-        .init   :{}
-        .text   :{}
-        .ctors  :{}
-        .dtors  :{}
-        .rodata :{}
-        .data   :{ *(.data) *(extabindex) *(extab) }
-        .bss    :{}
+        $SECTIONS
     }
 }