fix the bug of strRepr. Now single quote is escaped correctly
Implement chained comparisons
GC: Register None
Build fixes

Signed-off-by: Vinzenz Feenstra <evilissimo@gmail.com>
Merge pull request #92 from vinzenz/build-fixes

Build fix
Not sure why greg_t got changed from 'long' to 'long long' in newer versions of glibc; just cast it to be compatible
Merge branch 'strRepr' of https://github.com/xiafan68/pyston into github

Merges #88

Conflicts:
	src/core/threading.cpp
Merge pull request #89 from undingen/chained_comp

Implement chained comparisons
Update comparisons_chained.py
Merge pull request #91 from undingen/none_gc

GC: Register None
doh, silly bug in closureGCHandler
Be more careful about NULLs here
Fix a grwl deadlock in the repl

Well not sure if it's a deadlock; I think we try to
re-entrantly acquire the codegen lock, which then
confuses it later?
Basics of string manipulation
Tests and updates
String biltin methods implementation
Update