Partially bootstrap autoconf/automake toolchain

Still need to restore the docs, javascript, python ext, and tests, but
this does actually build jsonnet and a shared libjsonnet.so with
libtool now.

Fixes: google#53

Makefile.am

@@ -0,0 +1,25 @@
+ACLOCAL_AMFLAGS = -I m4
+AM_CXXFLAGS = ${my_CPPFLAGS} -Wall -Werror -pedantic -fPIC -I$(top_srcdir)/include
+AM_CFLAGS = ${my_CFLAGS} -Wall -Werror -pedantic -std=c99 -fPIC -I$(top_srcdir)/include
+
+bin_PROGRAMS = jsonnet
+jsonnet_SOURCES = cmd/jsonnet.cpp
+jsonnet_LDADD = libjsonnet.la $(LDADD)
+
+lib_LTLIBRARIES = libjsonnet.la
+libjsonnet_la_SOURCES = core/desugaring.cpp core/lexer.cpp core/libjsonnet.cpp \
+                        core/parser.cpp core/static_analysis.cpp core/vm.cpp
+nodist_libjsonnet_la_SOURCES = core/std.jsonnet.h
+libjsonnet_la_SOURCES += core/ast.h core/desugaring.h core/lexer.h \
+                         core/parser.h core/state.h core/static_analysis.h \
+                         core/static_error.h core/vm.h
+libjsonnet_HEADERS =$(top_srcdir)/include/libjsonnet.h
+libjsonnetdir = $(pkgincludedir)
+
+BUILT_SOURCES = core/std.jsonnet.h
+CLEANFILES = core/std.jsonnet.h
+core/std.jsonnet.h: stdlib/std.jsonnet
+	(($(OD) -v -Anone -t u1 $< \
+		| $(TR) " " "\n" \
+		| $(GREP) -v "^$$" \
+		| $(TR) "\n" "," ) && echo "0") > $@

configure.ac

@@ -0,0 +1,33 @@
+AC_PREREQ([2.61])
+AC_INIT([jsonnet], [0.8.5])
+AC_CANONICAL_HOST
+AC_CANONICAL_BUILD
+AC_CANONICAL_TARGET
+AC_DISABLE_STATIC
+
+AC_LANG([C++])
+AC_CONFIG_MACRO_DIR([m4])
+
+AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
+AM_MAINTAINER_MODE([enable])
+
+AC_PROG_CC
+AC_PROG_CXX
+AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
+
+#AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([
+  Makefile
+])
+AC_CHECK_HEADERS([alloca.h features.h libio.h stdc-predef.h stdio.h stdlib.h wchar.h])
+AM_MISSING_PROG(OD, od)
+AM_MISSING_PROG(GREP, grep)
+AM_MISSING_PROG(TR, tr)
+m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
+
+LT_PREREQ([2.2])
+LT_INIT
+LT_LANG([C++])
+LT_OUTPUT
+
+AC_OUTPUT