Enstaller

-------------------
* add commit message to egg repository index file, if
EGG-INFO/spec/__commit__ exists
* fix bug and simplified directory removal (when eggs are uninstalled)

-------------------
* metadata in now simply stored in EGG-INFO/<name> directories,
where <name> is the lowercase project name
* EGG-INFO/PKG-INFO files are simply stored using the egg name + '-info'
in site-packages
* EPD username and password are no longer stored in plain test in config
file; added --userpass option to enpkg

-------------------
* fixed regular expression for placeholder in egginst/object_code.py to not
allow whitespace, and also simplified object code placeholder handling
* fixed syntax for Python 2.5

-------------------
* simplified how default configuration file is created

-------------------
* add new feature to enpkg which allows "enpkg -l" to list the
source repository from which packages have been downloaded
* when egginst makes entry point scripts, it now guards the code
using "if __name__ == '__main__':"
* added debug information (the exception) to the warning which is printed
when (un)installing the application item fails
* changes targets (EGG-INFO/inst/targets.dat) to prepend (rather than append)
<sys.prefix>/lib in rpath.

-------------------
* be more explicit about valid characters in egg file-name
* fixes in documentation, added notes anout install process in readme