Parser static objects are not initialized before the next compilation

[valq7711]

parser.pyj module has several static objects that are mutated during the process.
(I mean BASELIB and CLASS_MAP at least). Thus, when two or more files are compiled at once, these objects contain data from the previous compilation, because there is no initialization / cleanup before the next compilation. I caught this bug when compiling in a browser.

It seems, there is no trivial-elegant solution, because parser has recursive calls + baselib is parsed at separated step before file compiling (these objects should be kept after baselib has been parsed)

Possible fix:

1. Create function parser.init_mod() that will initialize static objects
2. Fix rapydscript.compile(): If browser_env: Call parser.init_mod()
3. Fix compile.pyj: call parser.init_mod() and rapydscript.parse_baselib(...) before each file compiling (i.e. move rapydscript.parse_baselib(...) from module.exports = def():... into compile_single_file(...))

thoughts?

The bug demo

#make two files:
 
#foo.pyj:
def foo():
    a = range(10)

#bar.pyj:
def bar():
    print('hello')

try to compile files at once:
rapydscript -p foo.pyj bar.pyj you will see that bar exhaust includes range() as overhead