change build system from SCons to Waf

wscript

@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+def options(opt):
+    opt.load("compiler_cxx")
+
+def configure(conf):
+    conf.load("compiler_cxx flex bison")
+
+def build(bld):
+    subdirs = ["util", "shapes", "main", "distrib", "parser"]
+    sources = []
+    for s in subdirs:
+        sources += bld.path.ant_glob("%s/*.cc" % s)
+    lexer_source = "parser/parser.l"
+    parser_source = "parser/parser.yy"
+    sources += [lexer_source, parser_source]
+    bld.program(
+            source = sources,
+            cxxflags = ["-Wall", "-O2"],
+            target = "fart",
+            includes = subdirs + ["."],
+            lib = ["fl", "pthread", "freeimage"])