On Lydia's recommend, changed Cray CS PBS entry to specifically say PBSPro

Since we have evidence that Sun Grid Engine PBS isn't compatiable with
our launcher at present.  Word from marketing suggests that their
use of SGE PBS is on the wane anyway.



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22072 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Slight changes to release readmes 

README.chplenv
 - Moved point about setchplenv.* scripts closer to the top for new users 

README.executing
 - Added a pointer to the README.main for Chapel programs that accept 
   C-like command line arguments 

README.prereqs
 - Got rid of explicit GCC versions, and changed to at least version 3.3.0.
   Also mentioned that there has been some experience with Clang. 

README.localeModels
 - Split up a long line 



git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22073 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Small wording change based on conversation with Tim





git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22074 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Minor tweaks.

- Change the hopeful "should see" to the assertive "will see" when
  talking about the two binaries one gets when a launcher is used.
- Remove a reference to "launchers other than PBS", which made sense
  with a previous organization of the document but doesn't any more.
- Change "open source" and "open-source" to just "source".
- Un-capitalize "From" in a section heading (it's a preposition).
- Add a couple of missing blank lines.


git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@22075 3a8e244f-b0f2-452b-bcba-4c88e055c3ca