add casArray# primop, similar to casMutVar# but for array elements
Tweak stg_casArrayzh as per Simon Marlow's suggestion.
Update stg_casArrayzh to conform to new CMM conventions.
Add PrimOp: casIntArray#.  Modify casMutVar# for 'ticketed' style.
Add PrimOp fetchAddIntArray# plus supporting C function atomic_inc_by.
Eliminate atomic_inc_by and instead medofiy atomic_inc.
Update release notes for GHC 7.8
minor bugfix to casIntArray# and fetchAddIntArray#
Remove DYNAMIC_GHC_PROGRAMS tests in the linker

The linker is usable even when GHCi is dynamically linked.  These
tests make the linker_unload test fail.
Strings and comments only: 'to to ' fixes

I'd still prefer if a native english speaker would check them.
Update email addresses
MkIface: Mention that #include now adds dependent files

Signed-off-by: Austin Seipp <aseipp@pobox.com>
MkIface: More specific comment about what forms the interface hash

Signed-off-by: Austin Seipp <aseipp@pobox.com>
MkIface: When printing the recomp reason, make clear only mtime is used

Signed-off-by: Austin Seipp <aseipp@pobox.com>
MkIface: Be consistent with do notation

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fix interface hashes including time stamp of dependent files.

Fixes #8144.

Before, the modification time of e.g. #included files (and everything
that ends up as a UsageFile, e.g. via addDependentFile) was taken as
input for the interface hash of a module.

This lead to different hashes for identical inputs on every compilation.

We now use file content hashes instead.

This changes the interface file format.
You will get "Binary.get(Usage): 50" when you try to do an incremental
using .hi files that were created with a GHC 7.7 (only) older than this commit.

To calculate the md5 hash (`Fingerprint`) of a file in constant space,
there now is GHC.Fingerprint.getFileHash, and a fallback version
for older GHCs that needs to load the file into memory completely
(only used when compiling stage1 with an older GHC).

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fix -Werror failure in Fingerprint.hsc

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Remove trailing whitespace from MkIface

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Remove trailing whitespace from HscTypes

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Remove trailing whitespace from Fingerprint.hsc

Signed-off-by: Austin Seipp <aseipp@pobox.com>