Make narrowWideReferences its own pass.
Dereference widenMap at the call site.
Update compilerPerformance.perfkeys with new pass.
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
Start on new pidigits version that uses BigInt class.
Properly initialize a couple vars to 1 instead of 0.
Adjust default n value.
Merge branch 'master' of github.com:chapel-lang/chapel into use-bigint-for-pidigits
Check for grepstdchdrs script before calling it.

It is possible that CHPL_DEVELOPER is defined in a release tarball environment,
which does not have util/devel/grepstdchdrs script.
Merge branch 'master' into makeNarrowWideRefsItsOwnPass
Merge branch 'makeNarrowWideRefsItsOwnPass' of https://github.com/hildeth/chapel into makeNarrowWideRefsItsOwnPass
Merge pull request #556 from thomasvandoren/fix-chpl-version

Propagate --version fix to release/1.10 branch.
Resolve Coverity issues 1212285 and 1212286

Coverity accurately pointed out that the old return statements would always
result in the same value.  This replaces those statements with the value you
would get anyways.  When we add larger sized uints and ints, this case will
stay as the max size's result anyways, so I think no maintainability is lost.
Add perf configuration file for pidigits-BigInt.chpl