t/*: rearrange tests into numbered directories.

It was getting way too ad-hoc in there.  Let's reorganize the tests so that
there's a good, obvious, suggested sequence to run them in.

t/110-compile/.gitignore

@@ -0,0 +1,5 @@
+CC
+LD
+[yb]ellow
+hello
+*.o

t/110-compile/CC.do

@@ -0,0 +1,5 @@
+exec >$3
+cat <<-EOF
+	gcc -Wall -o /dev/fd/1 -c "\$1"
+EOF
+chmod a+x $3

t/110-compile/LD.do

@@ -0,0 +1,7 @@
+exec >$3
+cat <<-EOF
+	OUT="\$1"
+	shift
+	gcc -Wall -o "\$OUT" "\$@"
+EOF
+chmod a+x $3

t/110-compile/all.do

@@ -0,0 +1 @@
+redo-ifchange hello yellow bellow

t/110-compile/bellow.do

@@ -0,0 +1,3 @@
+redo-ifchange LD yellow.o
+./LD "$3" yellow.o
+../sleep 2

t/110-compile/clean.do

@@ -0,0 +1,3 @@
+rm -f hello [by]ellow *.o CC LD *~ .*~
+
+

t/110-compile/hello.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main()
+{
+    printf("hello, world!\n");
+    return 0;
+}

t/110-compile/hello.do

@@ -0,0 +1,3 @@
+redo-ifchange LD hello.o
+../sleep 1
+./LD "$3" hello.o

t/110-compile/hello.o.do

@@ -0,0 +1,4 @@
+redo-ifchange CC hello.c /usr/include/stdio.h
+redo-ifcreate stdio.h
+../sleep 3
+./CC hello.c

t/110-compile/yellow.do

@@ -0,0 +1,3 @@
+redo-ifchange LD yellow.o
+../sleep 1.5
+./LD "$3" yellow.o

t/110-compile/yellow.o.do

@@ -0,0 +1,3 @@
+redo-ifchange CC hello.c
+../sleep 2
+gcc -o $3 -c hello.c