- include config.h instead of manually adding -DHAVE_{CPLEX,GLPK} to CXXFLAGS
- removed the checking of LpSkeleton from lp_test.cc, because it is an
abstract base class now
- removed unnecessary LDFLAGS when linking with libemon.la

 AM_CPPFLAGS = -I$(top_srcdir)/src

 noinst_HEADERS = bench_tools.h

 noinst_PROGRAMS = graph-bench hcube bfs-bench

 graph_bench_SOURCES = graph-bench.cc

 hcube_SOURCES = hcube.cc

 bfs_bench_SOURCES = bfs-bench.cc