Add some more tests, and fix some existing ones

test/link/map-file/a.asm

@@ -0,0 +1,27 @@
+SECTION "rom0", ROM0
+Label0:: ds 1
+.local::
+
+SECTION "romx", ROMX
+Label1:: ds 2
+.local::
+
+SECTION "vram", VRAM
+vLabel:: ds 3
+.local::
+
+SECTION "sram", SRAM
+sLabel:: ds 4
+.local::
+
+SECTION "wram0", WRAM0
+wLabel0:: ds 5
+.local::
+
+SECTION "wramx", WRAMX
+wLabel1:: ds 6
+.local::
+
+SECTION "hram", HRAM
+hLabel:: ds 7
+.local::