modify for $signed and $unsigned#5

Merged

shtaxxx merged 3 commits intoPyHDI:masterfrom

fukatani:work2

Mar 12, 2015

Commits on Feb 22, 2015

4'sdのようなコードを解釈できないため修整。lexer内のtoken解釈をする順番を入れ替えただけ。
fukatani
committed

Commits on Feb 26, 2015

細かいバグ修整
 fukatani
committed

Commits on Mar 1, 2015

Modified bugs about $signed and $unsigned to work makeDFtree for both tasks and to parse $signed task.
fukatani
committed