[jhc] jhc dependencies for ghc-6.10.1

[Philip K.F. Hölzenspies]

Dear John, et al.

I will be trying jhc out, because it sounds like a good idea for some of
my number-crunching apps.

I just wanted to tell you how my build with ghc-6.10.1 (out-of-the-box)
went, although it's not completely fair, because I may have some things
from hackage installed already. Anyhow, I followed your requirement list
(binary,zlib,utf8-string) and ran into the following missing
dependencies:

readline
fgl

These were removed from ghc and extralibs, resp. You may want to list
these on your installation page for 6.10 builds. Also, people may like
to be pointed to this ticket (I ran into this):

http://hackage.haskell.org/trac/ghc/ticket/2897

Two more things that struck me:

- After the installation of jhc, I just had to try it: took a clean
directory fresh from the tarball, did ./configure --with-hc=jhc && make.
Unfortunately:

/home/holzensp/usr/bin/jhc -I./StringTable -I./cbits -I./cbits
-optc-std=c99 -optc-O2 -optc-Wall StringTable/StringTable_cbits.c -c -o
StringTable/StringTable_cbits.o
Error: Module not found: StringTable/StringTable_cbits.c
make[1]: *** [StringTable/StringTable_cbits.o] Error 1

- After the initial installation a directory appeared in my
$HOME/usr/share, called jhc-0.5. It seems not all version numbers were
bumped ;)

Regards,
Philip