Increase the "local variables in a function" limit by a huge amount.

Increase the "local variables in a function" limit by a huge amount.

The limit was originally added to avoid having large user-controlled constants
(variable indexes) in the code generated by full-codegen.

History behind this change:

The original CL for adding the limit was https://codereview.chromium.org/7003030
and at that time, the limit was 32767.

Reason for adding the limit (in CL comments): "The motivation behind this change
is to avoid large user controlled constants in the code. The slot_operand used
in the IA32 full code generator uses a relative load where the local index is an
(negative) immediate."

The limit was then bumped to 65535 by https://codereview.chromium.org/10965063
and to 131071 by https://codereview.chromium.org/11099063.

R=dcarney@chromium.org,rossberg@chromium.org,jkummerow@chromium.org,svenpanne@chromium.org
BUG=v8:3205

[marja, 2014-03-20 12:49:51]

... this is not good either, closing this.

The latest try is https://codereview.chromium.org/206143004