Rename python module name to 'bcc' from 'bpf'

* Rename python module to bcc
* Rename python-bpf (deb,rpm) package to python-bcc
* Pending this change, I will likely re-tag 0.1.6, and upload the bcc
  package to pypi.python.org

Signed-off-by: Brenden Blanco <bblanco@plumgrid.com>
diff --git a/tools/pidpersec b/tools/pidpersec
index 75ceaa7..7e23fbb 100755
--- a/tools/pidpersec
+++ b/tools/pidpersec
@@ -13,7 +13,7 @@
 #
 # 11-Aug-2015	Brendan Gregg	Created this.
 
-from bpf import BPF
+from bcc import BPF
 from ctypes import c_ushort, c_int, c_ulonglong
 from time import sleep, strftime