read_csv segfault
Works fine on v0.9.0. With master

```
rossi = pandas.read_csv("http://www.ams.jhu.edu/~dan/550.400/datasets/recidivism/Rossi%20data.csv")
*** glibc detected *** /usr/bin/python: malloc(): memory corruption: 0x0000000003c26680 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7ba9a)[0x7f498b804a9a]
/lib/x86_64-linux-gnu/libc.so.6(+0x7ce32)[0x7f498b805e32]
/lib/x86_64-linux-gnu/libc.so.6(realloc+0xf9)[0x7f498b807839]
/usr/bin/python(PyList_Append+0xd6)[0x46e336]
/usr/local/lib/python2.7/dist-packages/numpy/core/multiarray.so(+0x99763)[0x7f497f8cf763]
/usr/local/lib/python2.7/dist-packages/numpy/core/multiarray.so(+0x998d9)[0x7f497f8cf8d9]
/usr/bin/python[0x47ac88]
/usr/local/lib/python2.7/dist-packages/pandas-0.9.2.dev_f64ccf0-py2.7-linux-x86_64.egg/pandas/_parser.so(+0xb955)[0x7f4976c5a955]
/usr/bin/python(PyObject_Call+0x44)[0x45fed4]
/usr/local/lib/python2.7/dist-packages/pandas-0.9.2.dev_f64ccf0-py2.7-linux-x86_64.egg/pandas/_parser.so(+0x2418d)[0x7f4976c7318d]
/usr/bin/python(PyObject_Call+0x44)[0x45fed4]
/usr/local/lib/python2.7/dist-packages/pandas-0.9.2.dev_f64ccf0-py2.7-linux-x86_64.egg/pandas/_parser.so(+0x17ae1)[0x7f4976c66ae1]
/usr/local/lib/python2.7/dist-packages/pandas-0.9.2.dev_f64ccf0-py2.7-linux-x86_64.egg/pandas/_parser.so(+0x142f3)[0x7f4976c632f3]
/usr/local/lib/python2.7/dist-packages/pandas-0.9.2.dev_f64ccf0-py2.7-linux-x86_64.egg/pandas/_parser.so(+0xf5bd)[0x7f4976c5e5bd]
/usr/bin/python(PyEval_EvalFrameEx+0x361)[0x499061]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalFrameEx+0xb2f)[0x49982f]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalCode+0x32)[0x4eeb92]
/usr/bin/python(PyEval_EvalFrameEx+0x37d5)[0x49c4d5]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalFrameEx+0x802)[0x499502]
/usr/bin/python(PyEval_EvalCodeEx+0x145)[0x49fd55]
/usr/bin/python(PyEval_EvalCode+0x32)[0x4eeb92]
/usr/bin/python[0x4ff7f4]
/usr/bin/python(PyRun_FileExFlags+0x90)[0x42cdd0]
/usr/bin/python(PyRun_SimpleFileExFlags+0x2dd)[0x42d798]
/usr/bin/python(Py_Main+0xad3)[0x418db5]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xff)[0x7f498b7a7eff]
/usr/bin/python[0x4c91b1]
======= Memory map: ========
00400000-0062f000 r-xp 00000000 08:05 12064965                           /usr/bin/python2.7
0082e000-0082f000 r--p 0022e000 08:05 12064965                           /usr/bin/python2.7
0082f000-00897000 rw-p 0022f000 08:05 12064965                           /usr/bin/python2.7
00897000-008a9000 rw-p 00000000 00:00 0 
00c80000-03e97000 rw-p 00000000 00:00 0                                  [heap]
7f496b8fd000-7f496b914000 r-xp 00000000 08:05 13107724                   /lib/x86_64-linux-gnu/libresolv-2.13.so
7f496b914000-7f496bb14000 ---p 00017000 08:05 13107724                   /lib/x86_64-linux-gnu/libresolv-2.13.so
7f496bb14000-7f496bb15000 r--p 00017000 08:05 13107724                   /lib/x86_64-linux-gnu/libresolv-2.13.so
7f496bb15000-7f496bb16000 rw-p 00018000 08:05 13107724                   /lib/x86_64-linux-gnu/libresolv-2.13.so
7f496bb16000-7f496bb18000 rw-p 00000000 00:00 0 
7f496bb18000-7f496bb1f000 r-xp 00000000 08:05 13107879                   /lib/x86_64-linux-gnu/libnss_dns-2.13.so
7f496bb1f000-7f496bd1e000 ---p 00007000 08:05 13107879                   /lib/x86_64-linux-gnu/libnss_dns-2.13.so
7f496bd1e000-7f496bd1f000 r--p 00006000 08:05 13107879                   /lib/x86_64-linux-gnu/libnss_dns-2.13.so
7f496bd1f000-7f496bd20000 rw-p 00007000 08:05 13107879                   /lib/x86_64-linux-gnu/libnss_dns-2.13.so
7f496bd20000-7f496bd22000 r-xp 00000000 08:05 13107270                   /lib/libnss_mdns4_minimal.so.2
7f496bd22000-7f496bf21000 ---p 00002000 08:05 13107270                   /lib/libnss_mdns4_minimal.so.2
7f496bf21000-7f496bf22000 r--p 00001000 08:05 13107270                   /lib/libnss_mdns4_minimal.so.2
7f496bf22000-7f496bf23000 rw-p 00002000 08:05 13107270                   /lib/libnss_mdns4_minimal.so.2
7f496bf23000-7f496bf2f000 r-xp 00000000 08:05 13107883                   /lib/x86_64-linux-gnu/libnss_files-2.13.so
7f496bf2f000-7f496c12e000 ---p 0000c000 08:05 13107883                   /lib/x86_64-linux-gnu/libnss_files-2.13.so
7f496c12e000-7f496c12f000 r--p 0000b000 08:05 13107883                   /lib/x86_64-linux-gnu/libnss_files-2.13.so
7f496c12f000-7f496c130000 rw-p 0000c000 08:05 13107883                   /lib/x86_64-linux-gnu/libnss_files-2.13.so
7f496c130000-7f496c136000 r-xp 00000000 08:05 12194961                   /usr/lib/python2.7/lib-dynload/_multiprocessing.so
7f496c136000-7f496c335000 ---p 00006000 08:05 12194961                   /usr/lib/python2.7/lib-dynload/_multiprocessing.so
7f496c335000-7f496c336000 r--p 00005000 08:05 12194961                   /usr/lib/python2.7/lib-dynload/_multiprocessing.so
7f496c336000-7f496c337000 rw-p 00006000 08:05 12194961                   /usr/lib/python2.7/lib-dynload/_multiprocessing.so
7f496c337000-7f496c347000 r-xp 00000000 08:05 5117216                    /usr/local/lib/python2.7/dist-packages/sklearn/utils/murmurhash.so
7f496c347000-7f496c546000 ---p 00010000 08:05 5117216                    /usr/local/lib/python2.7/dist-packages/sklearn/utils/murmurhash.so
7f496c546000-7f496c547000 r--p 0000f000 08:05 5117216                    /usr/local/lib/python2.7/dist-packages/sklearn/utils/murmurhash.so
7f496c547000-7f496c549000 rw-p 00010000 08:05 5117216                    /usr/local/lib/python2.7/dist-packages/sklearn/utils/murmurhash.so
7f496c549000-7f496c54b000 r-xp 00000000 08:05 5117217                    /usr/local/lib/python2.7/dist-packages/sklearn/__check_build/_check_build.so
7f496c54b000-7f496c74a000 ---p 00002000 08:05 5117217                    /usr/local/lib/python2.7/dist-packages/sklearn/__check_build/_check_build.so
7f496c74a000-7f496c74b000 r--p 00001000 08:05 5117217                    /usr/local/lib/python2.7/dist-packages/sklearn/__check_build/_check_build.soAborted
```
