(svn r14641) -Change [Allegro]: when making a debug build revert Allegro's hooks on SIGSEGV/SIGABRT so one can actually use gdb.
-Change: make it more clear that Allegro's failing to find a driver.

bin/lang/*
bin/opentd*
bundle/*
config.cache.*
config.log
config.pwd
Makefile
Makefile.am
media/openttd.desktop*
objs/*
src/rev.cpp