Adding warning for running from bare cmd
Sort methods on Array, List<T>, and other core collections accept null comparers. This is not the case for immutable collections, despite what the doc comments claim. This change fixes the inconsistency buy allowing null comparers being passed to Sort methods of the immutable collections.
Update ImmutableArray`1+Builder.cs
Remove unnecessary allocations

While looking at string allocations in our code base,
I noticed a couple that can be trivially avoided in the XML libraries.
Merge pull request #151 from KrzysztofCwalina/dotnet2

Removes some string-related allocations from XML libraries
Fast implementation of Hamming weight

The target method: System.Reflection.Internal.BitArithmetic.CountBits
Old implementation uses 24 arithmetic operations
New fast implementation uses 12 arithmetic operations
Merge pull request #140 from KrzysztofCwalina/dotnet1

Allow null comparer to be passed to ImmutableArray<T>.Sort
Replace '? :' operator with '??'
Merge pull request #160 from LukaszWolanin/master

Replace '? :' operator with '??'
Adding more direct link to the .NET Foundation Forums
Merge pull request #167 from Petermarcu/forum_link

Adding more direct link to the .NET Foundation Forums
Reduce Node sizes by shrinking "height" from Int32 to Byte
Merge pull request #168 from stephentoub/immutable_node_size

Reduce Node sizes by shrinking "height" from Int32 to Byte
Limit application of the JitIntrinsicAttribute

This attribute should limit where it can be placed to something that the
JIT will respect.
Merge pull request #169 from briangru/master

Limit application of the JitIntrinsicAttribute
Adding badges for pull request and issue times.
Merge pull request #173 from Petermarcu/adding_badges

Adding badges for pull request and issue times.
Merge pull request #155 from AndreyAkinshin/FastHammingWeight

Fast implementation of Hamming weight
Update links to developer guide in error messages to new location
on the dotnet/corefx wiki.
Add System.Linq.Parallel Product and Test Code