$(WithHappyHc) = $(WithGhcHc) is a more sensible default.

add $(WithHappyHc) variable, to be set in build.mk (defaulting to
ghc-0.29, same as $(WithGhcHc)).

build and install Happy by default.

version nos upped to 2.06; added -O to GhcLibHcOpts; added HAPPY_VERSION

move the happy option-setting bit to the right place.

Add -1.2 to the happy options if we're using a GHC less than version
2.0.

Added suffix rules, option variables, etc for greencard

Version numbers bumped up in preparation for 2.05

Automatically set GhcWithNativeCodeGen

removed: HostPlatform_GNU; added: HostOS_Full

updated for 2.04; new variable: HostPlatform_GNU

ghc-2-03-p1 merged onto main trunk

Updated for 2.03 plus added REAL_SHELL

if->ifeq buglet

Make path to install-sh absolute, if used

INFO_PREFIX set

look for readline.h, BOOT_SRCS fix, HAPPY default setting

More small changes towards 2.02

Major update to more-or-less 2.02