Merge pull request #16 from alexanderlaw/master

Convert datetime values to Pegasus::CIMDateTime
fix typos in configure.ac
add configure results to notice message
fix CIMProperty type vs. Pegasus type
add missing private ctors for *Conv classes
introduce ScopedTransaction guard for every CIM operation
fix port value, when port re-bound
introduce ListConv::asPyCIMInstance(Name)List()

These methods are preparation for future Pull Operations
introduce pull operations
fix CIMClient::connect() error type and message
update coding style in examples
introduce sphinx templated configuration file

index.html now contains proper lmiwbem version in the heading.
bump release version to 0.5.0
fix missing newline in WBEMConnection::CloseEnumeration's doc string
reorganize source tree
return None instead of uninitialized CIMInstance(Name)
fix include guard typo
fix src/makefile path for lmiwbem_cimbase.h
code cleanup with unified string
add missing CIM error constants when Pull Operations are enabled