examples/hello/bpWriter working

To do:

BPReader examples and BP1Reader class

Pull request to Jason's branch

data streamed through DataMan successfully, example app works

DataMan integration

Added clang++ for MAC OS in buildDataMan.sh

Added -Wl,-rpath to Makefiles in DataMan examples
Added more variables to buildDataMan.sh

Other DataMan library dependencies must be in LD_LIBRARY_PATH

Added BP1Writer pgindex and metadata functionality. Need to hook it with
BPWriter engine 

Added complex support in ADIOS class and DataMan engine and example for
DataManWriter

Modified Makefile.libs and Makefiles in ./examples/hello/datamanReader
and ./examples/hello/datamanWriter

Need to set DATAMAN_LOC in those makefiles for local DataMan
installation.

Need to set DATAMAN_LOCATION in buildDataMan.sh for local DataMan
installation.

Run ./buildDataman.sh see contents for detailed info

compound type example

Testing