Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 130 insertions, 0 deletions

diff --git a/docs/rts/hugs_ret2.pstex b/docs/rts/hugs_ret2.pstex
new file mode 100644
index 0000000000..74d081c40c
--- /dev/null
+++ b/docs/rts/hugs_ret2.pstex
@@ -0,0 +1,130 @@
+%!PS-Adobe-2.0 EPSF-2.0
+%%Title: /tmp/xfig-fig007314
+%%Creator: fig2dev Version 3.1 Patchlevel 2
+%%CreationDate: Wed Oct 15 13:18:31 1997
+%%For: simonm@solander.dcs.gla.ac.uk (Simon Marlow,SM,,,,OCT99, )
+%%Orientation: Portrait
+%%BoundingBox: 0 0 185 139
+%%Pages: 0
+%%BeginSetup
+%%IncludeFeature: *PageSize Letter
+%%EndSetup
+%Magnification: 0.80
+%%EndComments
+/$F2psDict 200 dict def
+$F2psDict begin
+$F2psDict /mtrx matrix put
+/col-1 {0 setgray} bind def
+/col0 {0.000 0.000 0.000 srgb} bind def
+/col1 {0.000 0.000 1.000 srgb} bind def
+/col2 {0.000 1.000 0.000 srgb} bind def
+/col3 {0.000 1.000 1.000 srgb} bind def
+/col4 {1.000 0.000 0.000 srgb} bind def
+/col5 {1.000 0.000 1.000 srgb} bind def
+/col6 {1.000 1.000 0.000 srgb} bind def
+/col7 {1.000 1.000 1.000 srgb} bind def
+/col8 {0.000 0.000 0.560 srgb} bind def
+/col9 {0.000 0.000 0.690 srgb} bind def
+/col10 {0.000 0.000 0.820 srgb} bind def
+/col11 {0.530 0.810 1.000 srgb} bind def
+/col12 {0.000 0.560 0.000 srgb} bind def
+/col13 {0.000 0.690 0.000 srgb} bind def
+/col14 {0.000 0.820 0.000 srgb} bind def
+/col15 {0.000 0.560 0.560 srgb} bind def
+/col16 {0.000 0.690 0.690 srgb} bind def
+/col17 {0.000 0.820 0.820 srgb} bind def
+/col18 {0.560 0.000 0.000 srgb} bind def
+/col19 {0.690 0.000 0.000 srgb} bind def
+/col20 {0.820 0.000 0.000 srgb} bind def
+/col21 {0.560 0.000 0.560 srgb} bind def
+/col22 {0.690 0.000 0.690 srgb} bind def
+/col23 {0.820 0.000 0.820 srgb} bind def
+/col24 {0.500 0.190 0.000 srgb} bind def
+/col25 {0.630 0.250 0.000 srgb} bind def
+/col26 {0.750 0.380 0.000 srgb} bind def
+/col27 {1.000 0.500 0.500 srgb} bind def
+/col28 {1.000 0.630 0.630 srgb} bind def
+/col29 {1.000 0.750 0.750 srgb} bind def
+/col30 {1.000 0.880 0.880 srgb} bind def
+/col31 {1.000 0.840 0.000 srgb} bind def
+
+end
+save
+-28.0 181.0 translate
+1 -1 scale
+
+/cp {closepath} bind def
+/ef {eofill} bind def
+/gr {grestore} bind def
+/gs {gsave} bind def
+/sa {save} bind def
+/rs {restore} bind def
+/l {lineto} bind def
+/m {moveto} bind def
+/rm {rmoveto} bind def
+/n {newpath} bind def
+/s {stroke} bind def
+/sh {show} bind def
+/slc {setlinecap} bind def
+/slj {setlinejoin} bind def
+/slw {setlinewidth} bind def
+/srgb {setrgbcolor} bind def
+/rot {rotate} bind def
+/sc {scale} bind def
+/sd {setdash} bind def
+/ff {findfont} bind def
+/sf {setfont} bind def
+/scf {scalefont} bind def
+/sw {stringwidth} bind def
+/tr {translate} bind def
+/tnt {dup dup currentrgbcolor
+  4 -2 roll dup 1 exch sub 3 -1 roll mul add
+  4 -2 roll dup 1 exch sub 3 -1 roll mul add
+  4 -2 roll dup 1 exch sub 3 -1 roll mul add srgb}
+  bind def
+/shd {dup dup currentrgbcolor 4 -2 roll mul 4 -2 roll mul
+  4 -2 roll mul srgb} bind def
+/$F2psBegin {$F2psDict begin /$F2psEnteredState save def} def
+/$F2psEnd {$F2psEnteredState restore end} def
+%%EndProlog
+
+$F2psBegin
+10 setmiterlimit
+n 0 792 m 0 0 l 612 0 l 612 792 l cp clip
+ 0.04800 0.04800 sc
+/Helvetica ff 180.00 scf sf
+975 1350 m
+gs 1 -1 sc (Stack) col-1 sh gr
+7.500 slw
+% Polyline
+n 600 3000 m 1800 3000 l gs col-1 s gr 
+% Polyline
+n 600 2700 m 1800 2700 l gs col-1 s gr 
+% Polyline
+gs  clippath
+2928 3495 m 3048 3525 l 2928 3555 l 3090 3555 l 3090 3495 l  cp clip
+n 1200 3150 m 2400 3150 l 2400 3525 l 3075 3525 l gs col-1 s gr gr
+
+% arrowhead
+n 2928 3495 m 3048 3525 l 2928 3555 l  col-1 s
+% Polyline
+gs  clippath
+2928 2820 m 3048 2850 l 2928 2880 l 3090 2880 l 3090 2820 l  cp clip
+n 1200 2850 m 3075 2850 l gs col-1 s gr gr
+
+% arrowhead
+n 2928 2820 m 3048 2850 l 2928 2880 l  col-1 s
+% Polyline
+n 3075 2700 m 4425 2700 l 4425 3075 l 3075 3075 l cp gs col-1 s gr 
+% Polyline
+n 3075 3375 m 4425 3375 l 4425 3750 l 3075 3750 l cp gs col-1 s gr 
+/Helvetica ff 180.00 scf sf
+3555 2955 m
+gs 1 -1 sc (BCO) col-1 sh gr
+/Helvetica ff 180.00 scf sf
+3195 3630 m
+gs 1 -1 sc (Return Value) col-1 sh gr
+% Polyline
+n 600 900 m 600 3300 l 1800 3300 l 1800 900 l gs col-1 s gr 
+$F2psEnd
+rs