* fixed some bugs in rcc_pushstr in egg_lang.c
* fix bugs when strings within ',' and strating with non-zero char
* fix some error fixes
* fix the segment fault when calling functions with arguments
* add support for directory in include
* make some little changes
* add support for include and alias
* add some debug eprintf
* fix wrong label bugs in "while" syntax and rename some label
* fix odd syntax in "while" and "if"
* rename the labels
* add support for if\-else
* make some little changes for pretty print
* take a snapshot before writing confusing mathop
* finish mathop
* delete some unnecessary code in if-else frame to bypass test
* reindent all the thing
