* contrib/make_gcc_all.sh
+ Added darwin autodetection.
* contrib/Makefile
+ Added HB_CONTRIB_ADDONS envvar which enables building
local custom contribs stored in the contrib dir.
A separate dir may be better, but we will see.
* utils/hbtest/hbtest.prg
* Changed test .dbf filename casing to lowercase.
+ tests/rddtest
+ tests/rddtest/rddmktst.prg
+ tests/rddtest/adscl52.prg
+ tests/rddtest/adscl53.prg
+ tests/rddtest/ntxcl52.prg
+ tests/rddtest/ntxcl53.prg
+ tests/rddtest/cdxcl52.prg
+ tests/rddtest/rddtst.prg
+ tests/rddtest/make_c52.bat
+ tests/rddtest/cdxcl53.prg
+ tests/rddtest/make_c53.bat
+ Added RDD tests from xhb.