Make narrowWideReferences its own pass.
Dereference widenMap at the call site.
Update compilerPerformance.perfkeys with new pass.
io: add function isDir

This function will check whether the given path is a directory.
io: add isFile

This function will check whether the given path is a regular file.
add error checking on number of captures
add error checking on overflow in allocation for MAYBE_STACK_ALLOC
support octal in writef/readf
 fix unused variable
 add octal tests
include octal as base specifier
Octal print test now passes
Added tests to test/studies/colostate. include our Jacobi-2 and 3-D tests of tiling, naive parallel and serial
Mild change to header
Merge branch 'master' of github.com:chapel-lang/chapel into docs-assoc-spec
Add locale.maxTaskPar, adjust dataParTasksPerLocale.

Add documentation for the locale.maxTaskPar method, and document that
the default value of dataParTasksPerLocale is the .maxTaskPar for the
top-level locale.
Update the spec to reflect the var -> ref change
Rename the spec test variable-functions.chpl -> ref-return-intent.chpl
Updates from Vass's feedback
Housekeeping on CONTRIBUTORS

We've decided to focus the CONTRIBUTORS file here on those who have
contributed to the implementation rather than the language design
itself (such contributors are acknowledged in the language spec
itself).  To that end, removing Mark James and Hans Zima who did not
contribute code that ended up in the release or repository I can
recall or find in the logs.

Unifying to the term "individual contributor" for those who did not
contribute through an official organization or whose affiliation has
been lost.