Make more RGBLINK tests use at-files

Less special handling = good

Possibly this can be done to more tests, but this is what I found.

test/link/rept-trace.flags

@@ -0,0 +1 @@
+-Bno-collapse

test/link/rept-trace.out

@@ -0,0 +1,17 @@
+error: assert failure
+    at rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1::m(10)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1::REPT~1(15)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1(14)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2(13)
+    <- rept-trace.asm::REPT~4::REPT~3(6)
+    <- rept-trace.asm::REPT~4(4)
+    <- rept-trace.asm(2)
+error: assert failure
+    at rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1::m(10)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1::REPT~2(15)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2::REPT~1(14)
+    <- rept-trace.asm::REPT~4::REPT~3::REPT~2(13)
+    <- rept-trace.asm::REPT~4::REPT~3(6)
+    <- rept-trace.asm::REPT~4(4)
+    <- rept-trace.asm(2)
+Linking failed with 2 errors

test/link/rept-trace/out.err

@@ -1,17 +0,0 @@
-error: assert failure
-    at rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1::m(10)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1::REPT~1(15)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1(14)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2(13)
-    <- rept-trace/a.asm::REPT~4::REPT~3(6)
-    <- rept-trace/a.asm::REPT~4(4)
-    <- rept-trace/a.asm(2)
-error: assert failure
-    at rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1::m(10)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1::REPT~2(15)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2::REPT~1(14)
-    <- rept-trace/a.asm::REPT~4::REPT~3::REPT~2(13)
-    <- rept-trace/a.asm::REPT~4::REPT~3(6)
-    <- rept-trace/a.asm::REPT~4(4)
-    <- rept-trace/a.asm(2)
-Linking failed with 2 errors

test/link/scramble-bad-region.asm

@@ -0,0 +1,2 @@
+SECTION "test", ROM0
+db 1, 2, 3

test/link/scramble-bad-region.flags

@@ -0,0 +1 @@
+-S r0mx=4

test/link/scramble-bad-region.out

@@ -0,0 +1,2 @@
+FATAL: Unknown region name "r0mx" in spec for option '-S'
+Linking aborted with 1 error

test/link/test.sh

@@ -312,14 +312,6 @@ continueTest
 tryCmp "$test"/out.gb "$gbtemp"
 evaluateTest
 
-test="rept-trace"
-startTest
-"$RGBASM" -o "$otemp" "$test"/a.asm
-continueTest
-rgblinkQuiet -Bno-collapse -o "$gbtemp" "$otemp" 2>"$outtemp"
-tryDiff "$test"/out.err "$outtemp"
-evaluateTest
-
 test="same-consts"
 startTest
 "$RGBASM" -o "$otemp" "$test"/a.asm
@@ -333,6 +325,7 @@ test="scramble-invalid"
 startTest
 "$RGBASM" -o "$otemp" "$test"/a.asm
 continueTest
+# This `-S` argument contains spaces, so cannot be specified in a .flags file.
 rgblinkQuiet -o "$gbtemp" -S "romx := 4" "$otemp" 2>"$outtemp"
 tryDiff "$test"/out.err "$outtemp"
 evaluateTest
@@ -523,22 +516,6 @@ rgblinkQuiet "$otemp" "$gbtemp" "$gbtemp2" "$outtemp" "$outtemp2" 2>"$outtemp3"
 tryDiff "$test"/out.err "$outtemp3"
 evaluateTest
 
-test="truncation/level1"
-startTest
-"$RGBASM" -o "$otemp" "$test"/a.asm
-continueTest
-rgblinkQuiet -Wtruncation=1 -o "$gbtemp" "$otemp" 2>"$outtemp"
-tryDiff "$test"/out.err "$outtemp"
-evaluateTest
-
-test="truncation/level2"
-startTest
-"$RGBASM" -o "$otemp" "$test"/a.asm
-continueTest
-rgblinkQuiet -Wtruncation=2 -o "$gbtemp" "$otemp" 2>"$outtemp"
-tryDiff "$test"/out.err "$outtemp"
-evaluateTest
-
 if [[ "$failed" -eq 0 ]]; then
 	echo "${bold}${green}All ${tests} tests passed!${rescolors}${resbold}"
 else

test/link/truncation1.flags

@@ -0,0 +1 @@
+-Wtruncation=1

test/link/truncation1.out

@@ -1,2 +1,2 @@
 warning: Value $fffe8000 (may be negative?) is not 16-bit [-Wtruncation]
-    at truncation/level1/a.asm(3)
+    at truncation1.asm(3)

test/link/truncation2.flags

@@ -0,0 +1 @@
+-Wtruncation=2

test/link/truncation2.out

@@ -1,4 +1,4 @@
 warning: Value $fffe8000 (may be negative?) is not 16-bit [-Wtruncation]
-    at truncation/level2/a.asm(3)
+    at truncation2.asm(3)
 warning: Value $ffff4000 (may be negative?) is not 16-bit [-Wtruncation]
-    at truncation/level2/a.asm(2)
+    at truncation2.asm(2)