PPC: [runtime] Replace many buggy uses of %_CallFunction with %_Call.

PPC: [runtime] Replace many buggy uses of %_CallFunction with %_Call.

Port db2ba190dba6983b94eae36e111b0feebb97587e

Original commit message:
    The semantics of the %_CallFunction intrinsic seem to be very unclear,
    which resulted in a lot of bugs. Especially the combination with
    %IsSloppyModeFunction is always a bug, because the receiver would be
    wrapped in the wrong context. So the %IsSloppyModeFunction helper is
    gone now, and many of the buggy uses of %_CallFunction are also
    eliminated.

    If you ever need to call something with a different receiver, then
    %_Call is your friend now. It does what you want and implements the
    call sequence fully (and correct).

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=v8:4413
LOG=n

Committed: https://crrev.com/50c6b031fd2a474e642865b37f4d5de3b4618ff8
Cr-Commit-Position: refs/heads/master@{#30655}

[dstence, 2015-09-09 13:34:02]

lgtm

[MTBrandyberry, 2015-09-09 14:03:58]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-09-09 14:04:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1310303008/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1310303008/1

[commit-bot: I haz the power, 2015-09-09 14:27:27]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-09 14:27:51]

Patchset 1 (id:??) landed as
https://crrev.com/50c6b031fd2a474e642865b37f4d5de3b4618ff8
Cr-Commit-Position: refs/heads/master@{#30655}