fix gcc4.7 compile

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:

	arch/arm/boot/compressed/Makefile
Add optimization levels to Kconfig (-Os, -O2, -O3, -Ofast)
Use autogen defconfig
defconfig: update
- add -O2, -O3, and -Ofast optimization entries
sysctl: fix uninitialized warnings
namei: fix uninitialized warnings
kernel/workqueue.c: avoid array subscript above array boundaries

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
namespace.c: Fix uninitialized warnings
control.c: Fix 'val' uninitialized warning
journal.c: Fix 'blocknr' uninitialized warning
mixer.c: fix uninitialized warnings
qcedev.c: fix array subscript is above array bounds warning
cm3629.c: Fix 'cmd[1]' uninitialized warning
tcp_input.c: fix array subscript is above array bounds warning
nf_conntrack_h323_main.c: fix uninitialized warnings
af_unix.c: Fix 'hash' uninitialized warnings
phy.c: fix array subscript is above array bounds warning
mmc_ops.c: fix 'status' uninitialized warning
xdr.c: Fix uninitialized warnings
pm8xxx-ccadc.c: Fix uninitialized warnings

Conflicts:
	drivers/power/pm8xxx-ccadc.c