This uses downloaded tarballs in /mit/git/tarballs because the
autotools available on athena are too old right now.

On Athena 9.4 (rhel4):
./configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.21.0/common --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.21.0/i386_rhel4 --with-gssapi=/usr/athena
make
make install

On Athena 9.4 (solaris, sun.dialup):
./configure --prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.21.0/common --exec-prefix=/afs/sipb.mit.edu/project/git/builds/curl-7.21.0/sun4x_510 --with-gssapi=/usr/athena --enable-ldaps
make
make install

for each arch:
ln -s ../common/* .

to make live:
cd /mit/git/curl
ln -sf ../builds/curl-7.21.0/{i386_rhel4,sun4x_510} .