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
Mods based on mails that have come in since this morning
Merge branch 'master' of https://github.com/chapel-lang/chapel into triage-sep-blc
Start on new pidigits version that uses BigInt class.
Properly initialize a couple vars to 1 instead of 0.
Removing Cray internal URLs
Adjust default n value.