sha1: code cleanup and use modern C syntax

Apply the following changes:
- Remove out-of-date workaround (SPARC64_GCC_WORKAROUND)
- Use C99 prototype and stdint type

Change-Id: I630cf97f6824f72f4165e0fa9e5bfdad8edabe48
memcmp: prefetch optimizing for ARM Cortex-A8/A9

The original memcmp() was tweaked for ARM9, which is not optimal for ARM
Cortex-A cores.  This patch merges the prefetch optimizations from
ST-Ericsson and removes NEON slowdowns.

Reference experiement results on Nexus S (ARM Cortex-A8; 1 GHz) using
strbench program:
    http://pasky.or.cz//dev/glibc/strbench/

[before]
size, samples, TIMES[s] - user, system, total)
   4   262144         2.510000 0.000000 2.510000
   8   131072         1.570000 0.010000 1.590000
  32    32768         1.310000 0.000000 1.320000

[after]
size, samples, TIMES[s] - user, system, total)
   4   262144         2.280000 0.000000 2.290000
   8   131072         1.210000 0.000000 1.220000
  32    32768         1.040000 0.000000 1.050000

Change-Id: I961847da96d2025f7049773cd2ddaa08579e78d6
getopt(): fix missing carriage return on bad parameters

This affect all command line tools which show the usage on stdout
after an invalid parameter error (printed on stderr)

Change-Id: I8e2cb3fda241ab989dc42055f15082f8b3ba1397
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
headers: Unbreak some ARM syscalls

Restore the outside-kernel exclusion for some syscalls that was
removed by change I959b64280e184655ef8c713aa79f9e23cb1f7df4,
since these syscalls are used elsewhere.

Change-Id: I5b5bf3d78edd137e820d25281a375966b6c009ec
Bionic/libm: fast neon pow() for small x,y

Add a fast neon version of pow() suitable for relatively small
positive x and y (between 0 and 4).  Run the standard
implementation in all other cases.  Gives approximately 60%
performance improvement to AnTuTu FPU score.

Change-Id: I9234d37eaa6a815d1e619375f5b049c4ec88f557
armv6: REX routines are currently broken, use alternatives

Change-Id: I7ac05ab6add7802a4cc24fe36f7181e7cdfe07e0
Bionic/libm: Prefer branches and VFP ABI

For internal functions set gcc attribute "aapcs-vfp" for ARM
and use -fno-if-conversion to prefer branches over predicated
instructions (improves performance on architectures with good
branch prediction).

Change-Id: I365e9508bd3babb0bb06fc5de127c1ae17445bcc
Add missing define to build qcom libgralloc.

This is needed by hardware/qcom/display/libgralloc/ashmemalloc.cpp.

Change-Id: I7b35bcdaedf3874d17a0e6ce18931c11db1e133d
Add missing define to build qcom libgralloc.

This is needed by hardware/qcom/display/libgralloc/pmemalloc.cpp

Change-Id: Id0732b82ed6c1852def9688544ec92e04afeff00
Add missing define for libcopybit.

This is needed by hardware/qcom/display/libcopybit/copybit.cpp.

Change-Id: Ic50a75b93b39443b772dd4cab67a55f75ad2b5ad

Conflicts:
	libc/kernel/common/linux/msm_mdp.h
FORTIFY_SOURCE: remove memcpy overlap checks

These checks haven't been as useful as I hoped, and it's
causing a false positive finding.  Remove the overlap
compile time checks.

Change-Id: I5d45dde10ae4663d728230d41fa904adf20acaea