Replace test bison version without bash regular expression.
Tested on OS X 10.8 - Linux Ubuntu 12.4 - MinGW.
include ../common.mk
lib_LIBRARIES = libstage3.a
libstage3_a_SOURCES = \
stage3.cc \
flow_control_analysis.cc \
fill_candidate_datatypes.cc \
narrow_candidate_datatypes.cc \
print_datatypes_error.cc \
datatype_functions.cc \
lvalue_check.cc \
array_range_check.cc \
constant_folding.cc