first version of partio4Houdini

a collection of partio 4 houdini tools:
SOP_partio: a read/write node
ROP_partio: a write ROP
partioConvertCmd: a command for converion of the fly by the internal
houdini nodes
adding basic node compile makefile

this will be removed when cmake configured
Merge remote-tracking branch 'milo-green/master' into partio4Houdini

adding milo green's   partio4Houdini contrib
Update ROP_partio.C

updating for H12.5
Update partio_houdini.C

updated for H12.5
Merge branch 'redpawfx' into partio4Houdini
working on getting milesGreen's   Partio4Houdini  contrib  compiling in the tree  with  cmake, not quite there yet... the plugin compiles, but does not show up in houdini...  but his   makefile version of the compile will... I'm a newb at HDK...
Merge branch 'milo-green/master'

Conflicts:
	contrib/partio4Houdini/src/ROP_partio.C
	contrib/partio4Houdini/src/partio_houdini.C
cmake compiles  the houdini plugin now.  took a little hacking... and  there's still one spot where  include path is  hardcoded.. feel free to clean  this up a bit further.
ran the code thru the standard formatting  grinder  to conform it to the rest of the project
formatting/ license updates and some help strings tweaked. added in proper build outputs for the houdini plugin and icons
Merge branch 'partio4Maya'  into redpawfx
Merge branch 'partio4Houdini'  into redpawfx
partio4Houdini  is  thanks to  Milo-Green and his fork/branch  I added  cmake project love to  tie the whole thing together.
updated  partio4Maya version to 0.9.6
added missing  findHoudini.cmake  file
added  getCXXCompiler cmake file
switch for windows compile include issues
glut couldn't be found on windows in cmake config
reverting,  there's somethign else wrong with finding glut on  windows...
udpating cmake stuff  to compile in windows.. we'll be bouncing back and forth like this for  a little bit between platforms, making sure one cmake setup works for everything
Removed build of  ICECACHE for now (need to remove from  maya plugin as well)  since it needs work to be cross plat compatible
Haven't finished  updating all the cmake stuff yet for windows .. need to do  maya plugin and eventually add support for arnold and houdini plugs