Move booting to RubyXCompiler init

Also pass the source into the compile method.
This way compiler can be reused for subsequent compile.
Does remove some double boots, but no major time save

test/elf/helper.rb

@@ -8,8 +8,6 @@ module Elf
     DEBUG = false
 
     def setup
-      Parfait.boot!
-      Risc.boot!
     end
 
     def in_space(input)
@@ -19,7 +17,7 @@ module Elf
       in_space("def main(arg);#{input};end")
     end
     def check(input, file)
-      linker = RubyX::RubyXCompiler.new(input).ruby_to_binary( :arm )
+      linker = RubyX::RubyXCompiler.new.ruby_to_binary( input , :arm )
       writer = Elf::ObjectWriter.new(linker)
       writer.save "test/#{file}.o"
     end

test/elf/test_zero.rb

@@ -6,7 +6,7 @@ module Elf
 
     def setup
       super
-      @linker = RubyX::RubyXCompiler.new(as_main("return 1")).ruby_to_risc(:arm)
+      @linker = RubyX::RubyXCompiler.new.ruby_to_risc(as_main("return 1"),:arm)
       @linker.position_all
       @linker.create_binary
     end