add startup_dir to profiles

Any .py or .ipy file in this directory will be run at startup.
Files are run in in lexicographical order, as described in  #914

IPython/core/profiledir.py

@@ -59,9 +59,11 b' class ProfileDir(LoggingConfigurable):'
 
     security_dir_name = Unicode('security')
     log_dir_name = Unicode('log')
+    startup_dir_name = Unicode('startup')
     pid_dir_name = Unicode('pid')
     security_dir = Unicode(u'')
     log_dir = Unicode(u'')
+    startup_dir = Unicode(u'')
     pid_dir = Unicode(u'')
 
     location = Unicode(u'', config=True,
@@ -81,6 +83,7 b' class ProfileDir(LoggingConfigurable):'
         # ensure config files exist:
         self.security_dir = os.path.join(new, self.security_dir_name)
         self.log_dir = os.path.join(new, self.log_dir_name)
+        self.startup_dir = os.path.join(new, self.startup_dir_name)
         self.pid_dir = os.path.join(new, self.pid_dir_name)
         self.check_dirs()
 
@@ -91,6 +94,13 b' class ProfileDir(LoggingConfigurable):'
         if not os.path.isdir(self.log_dir):
             os.mkdir(self.log_dir)
 
+    def _startup_dir_changed(self, name, old, new):
+        self.check_startup_dir()
+
+    def check_startup_dir(self):
+        if not os.path.isdir(self.startup_dir):
+            os.mkdir(self.startup_dir)
+
     def _security_dir_changed(self, name, old, new):
         self.check_security_dir()
 

IPython/core/shellapp.py

@@ -22,6 +22,7 b' Authors'
 
 from __future__ import absolute_import
 
+import glob
 import os
 import sys
 
@@ -175,6 +176,7 b' class InteractiveShellApp(Configurable):'
 
     def init_code(self):
         """run the pre-flight code, specified via exec_lines"""
+        self._run_startup_files()
         self._run_exec_lines()
         self._run_exec_files()
         self._run_cmd_line_code()
@@ -230,6 +232,22 b' class InteractiveShellApp(Configurable):'
         finally:
             sys.argv = save_argv
 
+    def _run_startup_files(self):
+        """Run files from profile startup directory"""
+        startup_dir = self.profile_dir.startup_dir
+        startup_files = glob.glob(os.path.join(startup_dir, '*.py'))
+        startup_files += glob.glob(os.path.join(startup_dir, '*.ipy'))
+        if not startup_files:
+            return
+        
+        self.log.debug("Running startup files from %s...", startup_dir)
+        try:
+            for fname in sorted(startup_files):
+                self._exec_file(fname)
+        except:
+            self.log.warn("Unknown error in handling startup files:")
+            self.shell.showtraceback()
+
     def _run_exec_files(self):
         """Run files from IPythonApp.exec_files"""
         if not self.exec_files: