Make gcc compilation look like pandas

=========================================================

Pandas
------
gcc
-fno-strict-aliasing
-g
-O2
-DNDEBUG
-g
-fwrapv
-O3
-Wall
-Wstrict-prototypes
-Ipandas/src/klib
-Ipandas/src
-I/Users/francescelieshenar/.pyenv/versions/2.7.7/lib/python2.7/site-packages/numpy/core/include
-I/Users/francescelieshenar/.pyenv/versions/2.7.7/include/python2.7
-c pandas/hashtable.c
-o build/temp.macosx-10.4-x86_64-2.7/pandas/hashtable.o

=========================================================

Khash project
-------------
gcc
-fno-strict-aliasing
-g
-O2
-DNDEBUG
-g
-fwrapv
-O3
-Wall
-Wstrict-prototypes
-Ikhash/src/klib
-Ikhash/src
-I/Users/francescelieshenar/.pyenv/versions/2.7.7/lib/python2.7/site-packages/numpy/core/include
-I/Users/francescelieshenar/.pyenv/versions/2.7.7/include/python2.7
-c khash/hashtable.c
-o build/temp.macosx-10.4-x86_64-2.7/khash/hashtable.o

=========================================================
khash/hashtable.c:881:3: error: unknown type name 'kh_int64_t'
  kh_int64_t *table;
  ^
Compiles :)
Merge branch 'like_pandas'