add proxy support to Tizen gbs(gitbuildsys)

gistfile1.diff

--- gitbuildsys/utils.py.orig	2012-11-14 22:23:01.000000000 +0900
+++ gitbuildsys/utils.py	2012-11-15 07:33:56.000000000 +0900
@@ -23,6 +23,7 @@
 import pycurl
 import hashlib
 import signal
+import re
 import xml.etree.ElementTree as ET
 from collections import defaultdict
 
@@ -164,6 +165,7 @@
         curl.setopt(pycurl.SSL_VERIFYHOST, False)
         curl.setopt(pycurl.CONNECTTIMEOUT, connect_timeout)
         #curl.setopt(pycurl.VERBOSE, 1)
+        self.set_proxy_opts(curl)
         self.curl = curl
 
     def change_url(self, url, outfile, user, passwd):
@@ -237,6 +239,16 @@
             self.change_url(url, outfile, user, passwd)
             self.perform()
 
+    def set_proxy_opts(self, curl):
+      if os.environ.has_key("http_proxy"):
+        http_proxy = os.environ["http_proxy"]
+        m = re.search('^http://(([\w]+:[\w]+){0,1}@){0,1}([\w\.]+)(:([0-9]{1,5})){0,1}', http_proxy)
+        if m.group(2):
+          curl.setopt(pycurl.USERPWD, m.group(2))
+        if m.group(3):
+          curl.setopt(pycurl.PROXY, m.group(3))
+        if m.group(5):
+          curl.setopt(pycurl.PROXYPORT, int(m.group(5)))
 
 class RepoParser(object):
     """ Repository parser for generate real repourl and build config